While containers help developers rapidly build and run cross-platform applications, creating error-free apps remains a constant challenge. And while it’s not always obvious how container errors occur, this mystery is even harder for newer developers to unravel. Figuring out how to debug Docker containers can seem daunting. By Tyler Charboneau.
In this community all-hands session, Ákos Takács demonstrated how to solve many of these pesky problems and gain the superpower of fixing containers. He covers finding and fixing common container mistakes:
- Using the CLI for extra container visibility
- Change your CLI output formatting for visibility and readability
- Remember to leverage your logs
- Tackle issues with ENTRYPOINT
- Access and inspect container content
- Dive deeply into files and folders
- Solve Docker Build errors
- Solve Docker Compose errors
- Optional: Make direct file edits within running containers
- Investigate less and develop more
Overall, the process of fixing a container, on the surface, may seem daunting to newer Docker users. The methods we’ve highlighted above can dramatically reduce that troubleshooting complexity — saving you time and effort. You can spend less time investigating issues and more time creating the applications users love. And we think those skills are pretty heroic. Nice one!
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