Docker
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This is a short tutorial to use Docker.
Basic commands
- List of all containers: docker ps -a
- Remove a container: docker rm <container-id>
- Remove all stopped containers: docker container prune
- List of all images: docker image ls
- Remove an image: docker rmi <image-id>
- Remove all dangling images: docker image prune
- Create a new container (from an image): docker create jatzoo/jrivermc24
- Create and run a new container (from an image): docker run -d --name=jrivermc24--stable --net=host -e VNCPASS=foobar -v /volume1/Public/music:/mnt/media jatzoo/jrivermc24:latest
- Execute a command in a running container: docker exec -it <container-name> /bin/bash
- Obtaining information about CPU and RAM usage: docker stats
Detaching and attaching
- Control-P + Control-Q can be used to detach from a running container.
- docker attach command can be used to attach / reattach.
Building an image
- docker build -t app-name .
Dockerfile
- This can be used to setup the timezone:
ENV TZ=Europe/Moscow
Containers
- A started container is always associated with a command (either one present on the Docker image by default, or another one given on the command-line with docker run). This is the command that will be restarted with docker restart, or ran again after a docker stop / docker start.
- A container exiting with error code 137 means that the container used too much memory (and was killed by the kernel OOM killer).
Volumes
- Volumes with the default local driver can be accessed from the host.
- A volume can be associated only when the container is created, not with a running container.