This is a helpful post technically, but the English could use some work. I'm guessing the author is eastern European and not a native English speaker. It would

This is a helpful post technically, but the English could use some work. I'm guessing the author is eastern European and not a native English speaker. It would be a good idea to run the body text through spell check ("service" instead of "ervice", &c) and edit accordingly. The first time you run the above command, it can take a bit as Docker needs to download "It can take a bit of time as Docker needs to download" is proper English. Also, in the title, you need an apostrophe after "Beginners."