Docker Debugger

This is a solid Docker troubleshooting companion that walks Claude through systematic debugging, from checking container exit codes to diagnosing networking issues. It covers the usual pain points like containers that exit immediately, build failures, and volume permission problems, with actual commands and fixes rather than vague advice. The best practices section hits the important stuff like multi-stage builds, proper layer caching, and running as non-root. Use this when you're stuck on Docker problems and want Claude to methodically work through diagnostics instead of guessing. It's comprehensive enough to handle most common Docker headaches without being overwhelming.