Docker

Docker Commands

# List all running containers
docker ps

# List all containers (running and stopped)
docker ps -a

# Start a container
docker start <container_name_or_id>

# Stop a container
docker stop <container_name_or_id>

# Restart a container
docker restart <container_name_or_id>

# Remove a container
docker rm <container_name_or_id>

# Remove all stopped containers
docker container prune

# List all images
docker images
### 🐳 Docker Cheat Sheet

## Images
```bash
docker images                        # List images
docker pull <image>                  # Pull image from registry
docker build -t <name>:<tag> .       # Build image from Dockerfile
docker rmi <image>                   # Remove image
docker image prune                   # Remove dangling images
docker image prune -a                # Remove all unused images

Containers

docker ps                            # List running containers
docker ps -a                         # List all containers
docker run <image>                   # Run a container
docker run -d <image>                # Run detached (background)
docker run -it <image> bash          # Run interactively
docker run --name <name> <image>     # Run with custom name
docker run -p 8080:80 <image>        # Map host:container ports
docker run -v /host:/container <img> # Mount volume
docker start <container>             # Start stopped container
docker stop <container>              # Stop running container
docker restart <container>           # Restart container
docker rm <container>                # Remove container
docker rm -f <container>             # Force remove running container

Exec & Logs

docker exec -it <container> bash     # Shell into running container
docker exec <container> <cmd>        # Run command in container
docker logs <container>              # View logs
docker logs -f <container>           # Follow logs (live)
docker logs --tail 100 <container>   # Last 100 lines

Volumes

docker volume ls                     # List volumes
docker volume create <name>          # Create volume
docker volume rm <name>              # Remove volume
docker volume prune                  # Remove unused volumes
docker volume inspect <name>         # Inspect volume

Networks

docker network ls                    # List networks
docker network create <name>         # Create network
docker network connect <net> <cont>  # Connect container to network
docker network inspect <name>        # Inspect network

System & Cleanup

docker info                          # System info
docker stats                         # Live resource usage
docker system df                     # Disk usage
docker system prune                  # Remove all unused resources
docker system prune -a --volumes     # Nuclear cleanup

Docker Compose

docker compose up                    # Start services
docker compose up -d                 # Start detached
docker compose down                  # Stop & remove containers
docker compose down -v               # Also remove volumes
docker compose ps                    # List services
docker compose logs -f               # Follow logs
docker compose build                 # Build/rebuild images
docker compose exec <svc> bash       # Shell into service
docker compose pull                  # Pull latest images

Inspect & Copy

docker inspect <container/image>     # Detailed JSON info
docker cp <container>:/path ./local  # Copy from container
docker cp ./local <container>:/path  # Copy to container
docker diff <container>              # Show filesystem changes

Save & Load

docker save -o image.tar <image>     # Export image to tar
docker load -i image.tar             # Import image from tar
docker export <container> > app.tar  # Export container filesystem
docker import app.tar                # Import as image

---

Tip: Most commands accept the first few characters of an ID — you don’t need the full container/image ID.

Remove an image

docker rmi <image_name_or_id>

Remove all unused images

docker image prune -a

Build an image from a Dockerfile

docker build -t <image_name> .

Run a container from an image

docker run -d -p <host_port>:<container_port> <image_name>

View logs of a container

docker logs <container_name_or_id>

Follow logs in real-time

docker logs -f <container_name_or_id>

Execute a command in a running container

docker exec -it <container_name_or_id>

View container processes

docker top <container_name_or_id>

View container resource usage

docker stats

View detailed information about a container

docker inspect <container_name_or_id>

View detailed information about an image

docker inspect <image_name_or_id>

List all networks

docker network ls

Create a network

docker network create <network_name>

Remove a network

docker network rm <network_name>

Connect a container to a network

docker network connect <network_name> <container_name_or_id>

Disconnect a container from a network

docker network disconnect <network_name> <container_name_or_id>

List all volumes

docker volume ls

Create a volume

docker volume create <volume_name>

Remove a volume

docker volume rm <volume_name>

Remove all unused volumes

docker volume prune

View Docker system information

docker info

View Docker version

docker version

Clean up unused Docker resources

docker system prune

Clean up everything including networks and volumes

docker system prune -a

Clean up everything including networks, volumes, and images

docker system prune -a -f