Volume

Manipulation

docker volume list: list
docker volume inspect VOL_ID: inspect
docker volume create VOL_ID: create

Bind Mount

Mount host filesystem to container volume

docker container run -it --rm -v VOL_ID:path ubuntu:xenial: attach a volume to a container
- docker container run ... -v $(pwd):path...: sync local dir to the container
- docker container run ... -v $(pwd):path:rw ...: setup rw permission for the volume
- docker container run ... -v $(pwd):path:ro ...: setup ro permission for the volume

Managed Volume

docker run -d -p 80:80 -v VOL_ID:/usr/local/apache2/htdocs httpd
docker run -d -p 80:80 -v /usr/local/apache2/htdocs httpd: a random volume will be created in /var/lib/docker/volumes/XXX/_data
- echo "xxx" > /var/lib/docker/volumes/XXX/_data

Example

docker volume create vol1
docker container run -it --rm -v vol1:/data ubuntu:xenial /bin/bash
in the container
- ls /data: check the path in the container
- touch /data/xxx
- exit
docker ps: the container is killed
docker container run -it --rm -v vol1:/data ubuntu:xenial /bin/bash: create a new container
in the container
- ls /data: check the previously created xxx file in the container