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‫To the left here I have Sujay.

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‫He's a Cloud engineer, a Docker Captain and currently streaming from Malaysia and is a community leader

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‫of Docker Penang and the meetup group there.

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‫And you can see his little Twitter handle down there at the bottom.

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‫You can reach out to him later.

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‫Hello CJ.

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‫He's going to be talking about buildx, which is a really exciting new toolkit. Take it away. Thanks

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‫Bret.

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‫So, as we know, we have 19.03. It happened last week. There was a cool feature and this was announced

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‫during DockerCon.

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‫Docker had extended their support for ARM architecture. Soon after the DockerCon,

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‫we got, as a Docker Captain, got access to the Docker

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‫Peter version, the 19.03. The first thing I got to was the buildx feature.

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‫So, the buildx is actually a Docker label again which extends the Docker Build command

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‫and provides you some extra features which are basically provided by the Moby Project which is a new

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‫buildup mechanism coming up in Docker. It provides you some cool new features like you can carry out your build

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‫on multi nodes, different course. It also provides new build functionality like cache mechanism which

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‫is a built-in feature. Basically, I'm going to demo something about it.

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‫Let me share my screen for you.

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‫Shattering

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‫All right can see your screen.

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‫Okay.

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‫Yeah.

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‫Do you see my camera?

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‫Yep.

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‫Okay.

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‫And let me search. Okay.

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‫Let's start with the sample phone call program.

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‫Let's say is a pretty property property.

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‫Basically what I'm trying to do is type basic Hallowell kind of program and go.

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‫I have kind of a template for it.

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‫And if you see I'm just printing my hostname, my kind of architecture what I'm running on.

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‫And the OS.

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‫So if I had...I'm basically going through the way which we carry out our development in a Docker environment.

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‫So I have my code return and I do the

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‫release party so that compiles and I have a binary.

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‫So basically when I secured that binary,

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‫It prints my hostname and the OS type and architecture what I'm using.

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‫Basically I have been going through my development cycle and now it is time to write the

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‫Dockerfile.

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‫So let's skype for trouble filed for it and if I do, I have a template created for it.

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‫Basically I'm using again number 16 build where I'm using go like it made as an image, popping my code

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‫into it, building. Then in the second stage, using a scratch that's base image and then

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‫that's it.

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‫So, in a normal Docker world you would do docker build -d which is tagging my image. That's the

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‫best.

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‫Basically, I had done already a build of this same code earlier so that everything is scarce and

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‫you see the build happening in a fast way.

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‫If I execute docker run, sujaypillai/test.

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‫That is a code which I had on my machine is Docker right now.

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‫I have a Docker image and when I use that Docker image,

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‫it's basically printing my container ID

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‫which is the hostname.

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‫It's running in the next container and AMD64.

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‫That was basically the way which we lived our life in the Docker earlier before 19.03 release.

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‫Now if in the same, earlier version, if I had to build the same code for a different architecture.

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‫Let's say I have to run the code on Pie.

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‫I would have to prepare a manifest file for it.

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‫Add my Docker images to the manifest list and push that Docker Hub.

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‫All I have to do is everything manually.

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‫That's where one of the cool features of buildx is it helps you to build Docker images for multi platform.

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‫So let's make the architecture.

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‫Let me show you

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‫that is how it works.

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‫Basically when you have 19.03 release installed on your machine.

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‫I have Enterprise Edition running on my machine right now and by default, it comes with buildx installed

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‫in it.

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‫If you are on a community engine, you would have the same buildx CLI plugin available if you had an

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‫edge release.

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‫If you are still on a stable release of 19.03,

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‫the best way to get this that it needs to have projects for buildx, go to the releases page.

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‫You can download the binary for it and just what we need to do is just copy it and go to our default

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‫Docker directory, config directory.

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‫And docker.

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‫docker...yep.

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‫cli-plugins. As you see I have by default docker-app and docker buildx as cli-plugins.

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‫If you had a stable release you would have to manually do that.

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‫Let me show you how I can build an image which would be for multi architecture.

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‫By the way.

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‫I just want to mention you're talking about the...mentioning the plugins. For those of you who

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‫haven't heard about the new plugin model in the Docker command line,

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‫we'll be talking more about that throughout the week and we'll actually meet Michael Irwin and and others

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‫on Thursday.

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‫We'll actually be focused on how to build plugins and make your own custom stuff. So.

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‫Okay. Yeah.

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‫So, buildx has a command called build which is kind of the same functionality which you used to have like

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‫docker build.

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‫All you need....

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‫This is something which I will explain to you why

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‫it didn't work.

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‫You can see on my machine that I have a docker buildx listing. That is a default builder available which uses

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‫the Docker driver. By default,

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‫the Docker driver uses an embedded library in Docker  which has a storage mechanism called Moby Storage which doesn't support

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‫right now multiplatform builds.

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‫So what you need to do is that you need to create a new builder which you can do something like this.

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‫So what I did is that I the command buildx

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‫create. I'm using a new driver type called docker-container and giving my builder a name dckbuilder.

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‫If I do docker buildx ls now, I have a new docker builder in my list.

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‫The beauty of this thing is that the whole

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‫docker build project runs itself as a backend docker container. On my machine if you see right

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‫now I don't have any docker containers running.

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‫If I start using this one, docker builder.

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‫Let's switch to this with a docker buildx use dckbuilder

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‫So you see right now it's pointing to this one.

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‫And if I exude the same Doctor X amount again it's done in building delicate images.

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‫So what's happening right now is is building me just for.

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‫Just before Brett

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‫Lee M.D. for the next artist 4 and the sound version of it so all it's doing is that it's building those

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‫three images.

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‫So I notice I'm in Tennessee.

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‫That's kind of a battle a little bit is happening on your machine right now.

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‫And if you want it you can find all these three bills to be executing on every note.

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‫Also all you need to do is that add a new builder which would find to remote not so well if that happens.

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‫That is a very good batting push.

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‫They may just to get their hub out.

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‫So right now Mike I'm on base getting good back in the building they mean it.

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‫So what you just did there.

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‫I mean make sure I understand you're me ran a single command line that is simultaneously building the

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‫same app across different architectures and in parallel.

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‫Right.

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‫And if you have wanted those machines building could be remote Docker engines not just your local machine

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‫right.

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‫And then you were mentioning that you could also have that one one liner or do a push at the end of

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‫it to a registry assuming it's successful in building that's a lot.

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‫Yeah that's a lateral answer.

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‫Yes.

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‫And in in on top of that then all the pretty images how to build it would create a manifest five for

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‫you and push that long along that you need to push on to their doctor yeah cause that that was the tricky

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‫part too.

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‫I mean a lot of a lot of people don't even realize that manifest files exist or what their use is.

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‫You just mentioned that.

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‫What does what does or for the double manifest is basically a bill of material for your doctor and me

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‫just which is that my doctor and images have captured quite this basic architecture platform.

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‫It can run and so basically any you fool I finally meet.

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‫Let's see on that and verify it goes and pulls down the specific imaging which can be run on my protector.

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‫So all those things up information is stored in the manifest for you actually when the bill gets completed.

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‫That's kind of one of the new features for buildings.

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‫So the difference.

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‫When I said that it runs in a container.

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‫Let me show you what happened.

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‫So for those eight.

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‫Oh sorry.

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‫I was going to say just for those that are watching that have maybe seen one of our previous videos

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‫or one of one of the previous posts on build kit.

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‫This is running build kit in the background for you but the command line is changed so essentially you

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‫don't need to set an environment variable anymore.

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‫You're using this new yellow Dex command line to do that and then it has a whole bunch of extra features

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‫that that you're showing.

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‫Yeah yeah.

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‫So the whole is like happening in the container using this one.

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‫So you basically think it's running in the empty no

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‫OK.

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‫So the original bills my images and I did in fact the Bush ping saw that to do this once again

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‫so you can see a band is exploding manifestly so it's created the medical excuse and is pushing the

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‫medical sleuths on the doctor.

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‫And if I so wanted quality feature with dark flow and dark stopped at least four and five.

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‫Thing is you can look down the early cities within the

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‫following and this one so if I do a refresh you should see that image coming up here and if you see

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‫it build an image with cars and support for on 64 and 65 pictures.

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‫So that was about an index to basically be followed.

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‫All this month and let me show you this one.

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‫So doc or Ben back in March too.

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‫So this is kind of the darker manifest.

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‫Come on what we had earlier.

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‫It has you to in fact your darker image directly pointing to a remote registry.

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‫So right now I'm using

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‫the rule is 40 T.

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‫OK wow well sorry.

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‫So this is kind of the same command which we used to have for the.

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‫Manifesto is actually listing down your images which were pushed right now.

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‫When I did that.

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‫So basically you are having image by release party which is state of the art and it has 3D printed black

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‫on support.

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‫So these are all the information which goes into manifest both yeah.

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‫And for those of you that are really just users of Docker and you're not maybe releasing a whole bunch

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‫of multi arch images the way that this all sort of gets exposed to the consumer I guess we'll call him

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‫a doctor consumer is if when you type Docker run Python on Mac on a duck or desktop on Mac and you do

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‫it or you run Docker run Python on a Raspberry Pi or a mainframe or whatever the architectures are for

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‫a particular image for for example there for that Python image it this manifest file and docker figured

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‫it all out for you go oh you're running on this architecture let me go find that copy of the image that

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‫tagged a copy of the image so that you don't have to specify manually which architecture you're on Docker

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‫kind of he knows that.

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‫And so what Sue J show in here is the the other side of that coin which is how do I create multi architecture

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‫images without having to make a whole bunch of different tags or different repositories for those different

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‫images if you've been around Docker long enough years ago that's what we kind of had to do but nowadays

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‫all of this automation and and manifest stuff allows it to all be a sort of a seamless single it looks

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‫like a single thing single image in Docker Hub or in your registry right

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‫and the one thing I love is Dr. Miller has someone called Beck.

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‫If I'm not exactly used it right now.

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‫But that is a good doctor.

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‫Fine.

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‫We do have a little bit.

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‫If there was an open to us to end up during double fun.

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‫And Don you gave a good one hour doc on the biscuit and a portion of it contains an explanation for

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‫me.

196
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‫I still like to use this too.

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‫I want to be the right person to explain it

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‫so yeah.

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‫That's all from my break.

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‫All right.

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‫Pretty cool.

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‫The build X stuff is now considered release right.

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‫This is.

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‫This is official stable or you know it's still experimental.

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‫OK.

206
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‫Who qualifies opting so can you show would have been it.

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‫Sorry.

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‫I think in the beginning it showed how to enable it but can you for those that missed it including myself

209
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‫can you show that again.

210
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‫So if you'd so in other words if you up if you just are getting 1983 Dr. desktop this week because that's

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‫it's coming out and you should be getting the updates what do you have to do to be able to use this.

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‫So yes let me see.

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‫So if you are an enterprise customer you are using Duckworth community as you really is by default ships

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‫with it.

215
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‫And if you are on a stable to a laser now what do you need to do is that that is the toughest project

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‫for blacks and it has the releases happening monthly I so all you need to do is download the release

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‫and copy under the doctor config folder which is under your home directly under this one.

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‫All right.

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‫Do you talk about that in your blog post on this not it's documented well documented in the IT hub for

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‫blacks project

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‫I'm going to post your link on buildings.

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‫Very cool.

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‫Thank you for that.

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‫I'm I'm very excited about Bill decks as the sort of the next wave of building because I think it addresses

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‫nearly every single thing that I've heard either.

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‫I've had an issue with or limitation with or I've seen people complain about or wish that there was

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‫a feature in the builder for I see you know there is we could talk all day about Bill decks and all

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‫the build kit features and functionality out of it.

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‫But this is a really great intro to get you started.

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‫So Sue just got a blog post that I just put up that you can check out and you can just search for build

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‫x or build kit on the Googles and you can find that all right.

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‫So December you dumb down on flash Dr. flash index all right.

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‫I posted it twice.

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‫Yes.

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‫Build x or build X is the command line in front of build kit.

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‫So if you want the latest stuff definitely look up builder x.

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‫All right.

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‫I'm not seeing any build X actually.

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‫Wait there might be one specific question in here about build X build Kit says the built so to build

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‫X stuff is the same as the environment variable just a newer version of that.

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‫Correct.

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‫Yes.

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‫So when you used to set the build kit environment variable to enable it as the builder with the docker

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‫build command.

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‫Now you have a different complete command that has a whole bunch of extra functionality so.

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‫So the old way of doing it once you're in 1983 and you have the build X plug in then the new way is

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‫to use the build X command.

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‫So yes it supersedes that old environment variable.

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‫If you're want someone who's interested in faster better ways to build images I definitely recommend

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‫you figure out a way to get build X and try it.

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‫And this is the right time for you to get Docker feedback.

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‫How would how would they get darker feedback on these beta features.

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‫I think Sue J said there was a build X repo right

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‫so just to ask about these men if they've been actually experimental.

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‫It's been amended due to the reason that the veto support is not mature enough.

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‫But on the Linux side it is fully supported and you can take your production loads to build against

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‫build.

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‫Is there a repo for this.

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‫Yes.

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‫If you go Doctor slash you haven't got chest Doctor slash building.

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‫All right get up dot com slash Doctor slash build X.

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‫So that's the command line plug in that you would then put on your system and then I'm sure it's going

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‫to have some information there on how and.

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‫Yeah.

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‫And then factor looks like it's updated says if you're going to use it you use edge or you can get nightly

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‫builds.

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‫Yeah.

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‫And then because the thing about so the thing about a build right is if if it builds your images and

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‫it finishes chances like the builder doesn't affect a production image running as a container.

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‫Right.

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‫So the builder is really about the thing that's running on your C.I. system or in your logo machine.

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‫So if someone was talking to me and they asked me you know would you would you use build X in a real

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‫world scenario right now.

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‫I would say well obviously start with an on your machine.

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‫Don't be thrown in on your production S.I. on day one but.

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‫But you know progressed slowly like you would with any new technology but you know build kit has this

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‫isn't something that just they came up with last month build kit and build X the build X interface is

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‫riding on top of build kit and that's been around years now.

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‫Right.

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‫Like I think the product itself is like two years old.

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‫Yes.

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‫So it's not a brand new technology a lot of us have been demoing and showing off build kit functionality

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‫for over a year now and in fact you'll probably find some stuff on these YouTube channels talking about

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‫build kit from from a year ago.

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‫So it's exciting that now finally see it in the command line and see it coming to a 19 0 3 release near

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‫you.

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‫Are is the plan is the plan for build X for it to be out of experimental.

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‫I mean it's not going to be out of experimental anytime in the 19 three released right.

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‫So we have to wait for the next stable release for potentially for it to come in a stable.

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‫Yeah pretty much.