Pretty much this. I was working on a simple Rails app to get familiar with Rails and someone mentioned Docker to me. So I went to their website, did the tutoria

Pretty much this. I was working on a simple Rails app to get familiar with Rails and someone mentioned Docker to me. So I went to their website, did the tutorial, didn't understand why this is essential or better and just pushed to Heroku instead. Half of the time, if not more, I have no idea why this or that technology is being pushed so much or mentioned or whatever. And the landing page is not making it easier. Sometimes I feel like web development is more complicated than it should be.