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‫The requirements for this assignment, or the things you need to know before you should do this assignment,

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‫is that you've gone through some of the lectures in the past around getting a command shell inside the

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‫container, and also some of the basics around Linux distributions and how they might differ,

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‫and of course running a container. OK here's another assignment for you and it's going to be a little

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‫different than your traditional developer-meets-container scenario.

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‫But it's just as valid and just as common in the real world.

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‫In the past you might have set up a whole virtual machine just to simply test something like a different

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‫command line version or different Linux distribution.

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‫But with containers that gets WAY easier.

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‫Imagine yourself being a support engineer for a server farm that runs both Ubuntu and CentOS, and a

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‫ticket comes in that asks you to check on the different curl versions in those two distributions.

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‫So in the old, pre-container world, you'd probably have to set up a virtual environment and wait for operating

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‫systems to install unless you had them ready.

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‫But in this world we can actually just run a few commands.

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‫So really the goal here is just to run the curl version command inside two different Linux distributions

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‫in just a few minutes.

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‫So we'll be using the centos:7 version.

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‫And then the ubuntu:14.04  version. You'll want to use the -it on your docker run command

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‫and give it the bash command at the end.

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‫Then there's a new option you should try, which is the --rm, which will save you some time

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‫later. So I recommend looking that up through Help on the command line or through the Docker Support

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‫site at docs.docker.com.

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‫And really once you're in there,...

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‫oh and by the way, you definitely want two different terminal windows so you can switch back and forth between

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‫these two...

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‫and in order to run the curl version command, you're going to need to update each one of the distributions

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‫or check whether or not curl's installed.

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‫I've given you some commands there that they're a little bit different between the two. Really

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‫this exercise isn't going to give you an interesting output.

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‫It's really just helping you understand how easy and quick you can jump into different software or Linux

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‫distributions, run some tools, and then get out. In the end, I would expect you to have different curl

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‫versions in those two distributions.