Hey everyone! I'm diving deeper into DevOps and have a good grasp on the basics of Docker. I can create images, work with Docker Compose, and have dabbled in Docker Swarm. After completing a few projects, I'm ready to elevate my skills to new heights. Specifically, I want to learn about multi-stage builds, creating Alpine-based images in Dockerfiles, adding health checks in Docker Compose, and other advanced best practices with Docker. If you have any free resources, courses, or YouTubers you could recommend that cover these topics in detail, I'd really appreciate it! Thanks!
3 Answers
If you're looking for best practices, I found this official Docker documentation on building best practices super insightful: https://docs.docker.com/build/building_best_practices/. It goes over multi-stage builds and other techniques that can really cut down on image size and improve efficiency.
It sounds like you've got a solid foundation! For advanced Docker learning, I'd suggest checking out some online platforms. Sites like Roadmap.sh can provide great project ideas to enhance your learning. YouTube is also a goldmine for tutorials—search for channels focusing on Docker best practices and projects. Don’t hesitate to dive into resources that explore multi-stage builds, as they really streamline image creation!
Thanks for the tip! I’ll definitely check out Roadmap.sh and look for YouTube content.
Absolutely brush up on Linux if you haven't yet! A lot of Docker concepts are easier to grasp when you have a good understanding of the underlying OS. But since you mentioned you know some Linux and have Bash automation experience, you’re on the right track!
I agree! I’ve done some projects using Bash, and it has really helped me.
Linux skills are crucial for a DevOps role. Keep honing those alongside your Docker skills!

I’ve found that asking for beginner to intermediate project ideas on forums and then progressing to advanced ones helps solidify my understanding.