Docker container troubleshooting process: 1) check container status (docker ps -a) and exit codes; 2) view container logs (docker logs) to locate error messages; 3) use docker inspect to view container configuration and network information; 4) enter container (docker exec -it) to check application status; 5) check resource usage (docker stats) for over-limit issues; 6) verify network connections and port mappings; 7) check volume mounts and permissions; 8) view Docker daemon logs (journalctl -u docker); 9) use docker events to view real-time events; 10) compare configuration differences between normal and abnormal containers. Common issues: startup failure, network connectivity, insufficient permissions, resource exhaustion, missing dependencies.