Management commands

Basic Container Commands

Get a List of Active Containers

• -a shows all containers

# Get a list of running containers
docker ps -a

Start and Stop Containers

• --name gives the container a name
• --rm removes the container when it’s stopped
• -d runs the container in detached mode (does not block the terminal)
• -p map a port from inside the container to one that’s exposed to the outside

# Start a container from an image
docker run --name <container-name> --rm -d <image-name>
 
# Start a container and expose a port to the outside
docker run --name <container-name> --rm -d -p <port>:<port> <image-name>
 
# Stop a running container
docker stop <container-name> 
 
# Remove a stopped container
docker rm <container-id/name>
 
# Get rid of old containers
docker system prune

Attach and Detach Containers, Interactive Sessions

• -it run a container in interactive mode (open a terminal session)

# Start a container from an image
docker run -it <image-name>
 
# Attach an active container to the terminal
docker attach <container-name/id>
 
# For a stopped container, use attach + interactive
docker start -a -i <container-id/name>

Basic Image Commands

• -t gives the image a name

# Build a new image
docker build .
 
# Build and tag an image
docker build -t <image-name>:<tag> .
 
# Remove an image 
docker rmi <image-name>
 
# Inspect an image
docker image inspect <image-id>