# Docker
#docker-ce(community edition)
docker ps #list running containers, --all to list with stopped containers
docker image ls #list images
docker image prune #remove all dangling images
# --rm: container is removed after command finishes
docker run --name ubuntu_bash --rm -i -t ubuntu:18.04 bash
docker run --name gentoo_bash --gpus all -it -v ${PWD}/usr/src:/usr/src gentoo/stage3:latest /bin/bash
docker image rm ubuntu #removes ubuntu:latest image
docker commit <CONTAINER_ID> ubuntu:yolo
docker cp <src-path> <container>:<dest-path>
docker inspect <CONTAINER_ID> #find ip etc.
docker image inspect ubuntu_cuda10_bash:opencv_gstreamer #view layers
#change the default docker directory (/var/lib/docker)
docker info -f '{{ .DockerRootDir}}'
sudo vim /etc/docker/daemon.json
{
  "data-root": "/new_dir_structure/docker"
}
docker stop <container>
docker rm <container>
docker rename <container> <new_name>
## to remove all stopped containers
docker container prune
## pass environment variables with --env
docker exec -u gowtham -e HISTFILE=/apollo/.dev_bash_hist --env TERM=xterm-256color -it apollo_dev_gowtham /bin/bash
## rename image
docker tag <oldTag> <newTag>
docker rmi <oldTag>
## connect or login to container as root
docker container exec -it apollo_dev_necktwi /bin/bash
## volumes
docker volume ls
docker volume inspect <volume_name>
## run stopped container
```
docker ps -a
```
```
docker start ubuntu18 # container name
docker attach ubuntu18
```
or
```
docker commit <container_id> <image_tag>
docker image ls
docker run -it --rm --entrypoint /bin/bash <image_tag>
```
## free or clean up
docker image prune
## be careful
docker system prune -a
## when want to connect sshfs volumes to docker, connect to sshfs volume with
#edit /etc/fuse.con and
sshfs -o allow_root
## to attach specific gpu and mount local folder
docker run -it --device=/dev/kfd --device=/dev/dri/card0 --device=/dev/dri/renderD128 --cap-add=SYS_RAWIO --volume /mnt/ssd2/:/root --group-add video rocm/dev-ubuntu-18.04:5.1.1-complete