In order to follow this tutorial, make sure you have Docker installed and working on your development computer (verify it by running $ docker -v in your command line). You don't need to have any prior Docker experience as I will try to explain things from the ground up. If you have any questions, don't hesitate to leave a comment below. Last but not least a word of caution; while Docker is supported natively on Linux, it requires an additional layer to work on Windows and Mac (which, if you installed it, you already know). This problem slightly undermines the advantages of using Docker now, but since I have access to the beta (and you can too! Apply here) I can assure you these issues will go away soon. The issue is that you still need to have a virtual machine running, but the good part is that it's only to run a tiny wrapper Linux distribution, called boot2docker. In order to understand what Docker is, let's look at a couple of problems we (and by we I mean WordPress developers) face on almost a daily basis. We've all been in situations where we needed to share our code with another developer (or many of them). Once we committed our code to GitHub (you do use, Git, right?) and they
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