Rails meets docker - Gemnasium

So there is this new tool called Docker, and you may have heard great stories about it. But as a web developer using Ruby, you may wonder what this tool changes for you. Skeptical? Please follow this way! Docker is a big topic and it would be impossible to give a decent introduction to it in a single blog post. But if curious about Docker, you will get a chance to put your hands on it. Along the w