Ranked in these QuestionsQuestion Ranking
Pro Written by well known Docker developer
The author of the blog, Ian Miell, has contributed to Docker and has extensive experience building/maintaining Docker-based infrastructure.
Currently he is writing a book on Docker.
Pro Updated fairly often
The author updates the blog a couple of times a month with new tutorials.
Con Difficult for beginners to follow
The blog doesn't follow a progression. It jumps between topics, many of which might be confusing for someone new to Docker.