Docker Commands
List images:
docker images
List running docker processes:
docker ps
List all processes that were ever run:
docker ps -a
List only the container IDs:
docker ps -a -q
Running processes:
docker run <image>
docker run -d <image> = run in disconnected / daemon mode
docker run --name="Some Name" = name the running instance
docker start <name> = will restart a closed / exited instance of the image
docker exec -it <name> <command> = run a command within a running container without changing the state of the running container
docker stop <name> = stop a running container by using the name
Tail logs in a container
docker logs -f <container_id> = tail the logs of the container
Remove unused volumes
docker volume rm $(docker volume ls -qf dangling=true)
Cleaning up Docker:
docker rm containerid = removes an instance of the container that was run
docker rm `docker ps -a -q` = remove all stopped containers
docker rmi image-name = removes the docker image and its dependencies
Redirect port:
docker run -P = will redirect the container's port to a random port on the host machine's user port (port no 32,000+)
docker run -p 8080:80 = will redirect the container's port 80 to a port 8080 on the host machine's user port
docker port <container-name> = will list the port mapping information
Adding volume:
using the "-v" option mounts the local file system. eg to mount for an nginx on centos
-v /home/user/www:/usr/share/nginx/html
Building a Docker file:
docker login --username=<username>
Enter password
docker push username/repo