Docker Debugging Guide

This guide provides a systematic approach to debugging Docker containers, images, networks, and volumes. Follow the four-phase methodology for efficient problem resolution.

The Four Phases of Docker Debugging

Phase 1: Quick Assessment (30 seconds)

Get immediate context about the issue.

# Check container status
docker ps -a

# View recent logs (last 50 lines)
docker logs --tail 50 <container>

# Check container exit code
docker inspect <container> --format='{{.State.ExitCode}}'