DOCKER COMMAND CHEAT SHEET (MASTER LEVEL)
== GENERAL ==
docker version # Show Docker version
docker info # Display system-wide info
docker help # Show help for any command
== IMAGES ==
docker images # List images
docker pull <image> # Download image
docker build -t <name>:<tag> . # Build image from Dockerfile
docker rmi <image> # Remove image
docker tag <src> <target> # Tag an image
docker save -o <file>.tar <image> # Save image to tarball
docker load -i <file>.tar # Load image from tarball
== CONTAINERS ==
docker ps # List running containers
docker ps -a # List all containers
docker run -d -p 80:80 <image> # Run container detached
docker run -it <image> /bin/bash # Interactive shell
docker exec -it <container> <cmd> # Run command in running container
docker logs <container> # Show container logs
docker stop <container> # Stop container
docker start <container> # Start container
docker restart <container> # Restart container
docker rm <container> # Remove container
docker rename <old> <new> # Rename container
== VOLUMES ==
docker volume create <name> # Create volume
docker volume ls # List volumes
docker volume inspect <name> # Inspect volume
docker volume rm <name> # Remove volume
docker run -v <vol>:/data <image> # Mount volume
== NETWORKING ==
docker network ls # List networks
docker network create <name> # Create custom network
docker network inspect <name> # Inspect network
docker network rm <name> # Remove network
docker run --network=<name> <image> # Run with custom network
== DOCKERFILE ==
FROM <base-image> # Base image
RUN <command> # Run command at build
COPY <src> <dest> # Copy files
ADD <src> <dest> # Copy files (also extract archives)
CMD ["executable", "arg"] # Default container command
ENTRYPOINT ["executable", "arg"] # Command with fixed entry
EXPOSE <port> # Document port
ENV <key>=<val> # Environment variable
VOLUME ["/data"] # Mount point
== CLEANUP ==
docker system df # Show disk usage
docker system prune # Remove unused data
docker image prune # Remove unused images
docker container prune # Remove stopped containers
docker volume prune # Remove unused volumes
== ADVANCED ==
docker inspect <object> # Detailed info on image/container
docker stats # Real-time resource usage
docker top <container> # Show running processes
docker cp <container>:<path> <host_path> # Copy from container
docker cp <host_path> <container>:<path> # Copy to container
docker login # Authenticate to registry
docker push <image> # Push image to registry
docker commit <container> <image> # Commit container to image
== DOCKER COMPOSE ==
docker-compose up -d # Start services in background
docker-compose down # Stop and remove services
docker-compose build # Build images
docker-compose logs # View logs
docker-compose exec <service> <cmd> # Exec into service container
