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‫OK. I'm super excited about this assignment for you because bind mounts can be really cool.

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‫They're particularly cool for local development or local testing. Because as we've explained before,

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‫they're going to allow you to edit files on your host operating system, and then they're actually running

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‫or being used inside the container to do things in a much easier way.

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‫In this example, we're actually going to be using something called a "Static Site Generator" and this

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‫isn't specifically

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‫a web developer assignment.

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‫We're not actually going to be doing much other than editing a line of text.

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‫Really, what this is about, is getting used to the idea of taking host data, that you have on your host

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‫machine, and then mounting that into a container, then changing it on the host and watching it be

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‫reflected inside the container.

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‫Right.

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‫In this case, this is a pretty common example. A web developer has source code and HTML and all

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‫that, on their host and they normally would have to download all the special tools they need on the host,

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‫Right?

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‫We would need the programming language tools, a web server, some sort of file watcher that detects

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‫changes and restarts things, and all these tools, right?

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‫That's normally a big thing for web developers is to figure out how to make all that work on their

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‫particular operating system and all the right versions.

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‫But the cool thing is in Docker Hub, so many of these problems have gone away because the stacks of those

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‫components are all inside a single container, and somebody has done all the hard work for you.

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‫In this case, we're going to actually be using Jekyll,

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‫and like I mentioned earlier, it's an SSG.

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‫Those are really very basic tools that allow you to create markdown, which is basically plain text.

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‫Then it takes those and generates it into an HTML website.

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‫It's really great for small blogs or simple websites where you don't want to have to be an HTML guru,

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‫and you just want to write something simple and have it posted on the web.

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‫This is also whenever you see sites run by GitHub, known as GitHub Pages, Jekyll is also the tool that

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‫they use.

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‫In this case, you're going to jump into the bind mount sample directory, as listed here on the slide.

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‫You're going to see some files there. You're going to edit those with your editor of choice, whether

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‫it's Visual Studio Code, or Atom, or Vim, or Sublime Text or whatever you like.

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‫We're going to have a container running in the background that's running Jekyll and watching those

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‫files on your host, and detecting updates, and then automatically updating the web server that's built

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‫into the container.

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‫To get you started, here is the command you can actually use.

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‫You want to jump into that bind mount sample directory, and then run this particular docker run command,

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‫which will open up your default localhost and actually map that directory.

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‫Remember, the pwd will map that into the site directory inside the container, which is what we've set

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‫up here.

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‫Then I've made you a custom, Jekyll container that's really easy to use and it's using all the latest

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‫versions.

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‫So what you should see is you should be able to run that, open up your browser localhost, see the

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‫website there with the basic web page. That's actually using the default template. Then you're going

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‫to just quickly jump into the post directory that's inside that bind mount sample.

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‫You can actually see it here.

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‫On my screen,

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‫I actually have it in my Visual Studio code. So these will be the files inside that directory.

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‫You'll just go into this file here, which is a markdown file, and it's OK if you're not a markdown

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‫guru. You just need to change something in here, and then jump over to your web browser and notice

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‫how it's reflected automatically as an update once you save the file.

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‫Of course, I highly recommend looking at the logs inside Docker to see what it's doing, because it

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‫will actually tell you every time a file is changed and it's reloaded the server.

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‫If you get stuck or for this doesn't make sense you, just watch my answers lecture video right after

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‫this.

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‫I'm going to run through this and you can follow along if you get stuck.

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‫Good luck.