Tag: usage

Image Handling

docker image list	list downloaded images
docker rmi image_name	delete image

Administration

docker system df	show docker disk usage
docker system prune	free space – remove stopped containers, images, cache
systemctl restart docker.service	restarts the docker service (and all your container)
ss -tulpn	check if docker containers listen to any port
docker exec contaienr_id cat /etc/hosts or docker inspect -f ‘{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}’ contaienr_id	check container ip address

Container Handling

docker ps	list running containers
docker ps -a	list all the docker containers (running and stopped)
docker stop container_id	stop container
docker rm container_id	delete stopped container
docker update –restart=unless-stopped container_id	make sure container re-start, unless manually stopped
docker run -l debug container_id	run container with log
docker logs -f container_id	display log
docker exec -it container_id /bin/sh	open a shell in the running container
docker commit container_id user/test_image	this command saves modified container state into a new image user/test_image
docker run -ti –entrypoint=sh user/test_image	run with a different entrypoint
docker run –volume-driver=nfs container_id	mount NFS share

Docker Compose

docker-compose -f ~/docker/docker-compose.yml up -d	The -d option daemonizes it in the background
docker-compose -f ~/docker/docker-compose.yml down	completely stop and remove containers, images, volumes, and networks (go back to how it was before running docker compose file)
docker-compose -f ~/docker/docker-compose.yml pull	Pull latest images
docker-compose logs container_id	check real-time logs
docker-compose stop container_id	stops a running container
docker-compose config	test your.env file which is used for variable substitution in the docker-compose.yaml