The comprehensive Docker command line reference is located here. However we will cover some basic commands.
| Image | |
| Build an image | docker build -rm=true . |
| Install an image | docker pull ${IMAGE} |
| List of installed images | docker images docker images –tree (tree view) docker images -no-trunc (detailed listing) |
| Remove an image | docker rmi ${IMAGE_ID} |
| Remove all untagged images | docker rmi $(docker images | grep “^” awk ‘{ print $3 }’) |
| Remove all images | docker rm $(docker ps -aq) |
| Container | |
| Run a container | docker run (many other options on this) |
| List containers | docker ps docker ps -a (list all containers) |
| Stop a container | docker stop ${CID} |
| Restart a container | docker restart ${CID} |
| Find IP address of container | docker inspect –format ‘{{ .NetworkSettings.IPAddress }}’ ${CID} |
| Attach to a container | docker attach ${CID} |
| Remove a container | docker rm ${CID} |
| Remove all containers | docker rm $(docker ps -aq) |
| Find CID of last-run container | docker ps -l -q |
| Copy a file in a container to host | docker cp ${CID}:/etc/passwd . |
| Show container information | docker inspect ${CID} |
| Show logs of a container | docker logs ${CID} |
| Show running process in a container | docker top ${CID} |
| Mount a directory in host to a container | docker run -v /host/dir:/container/dir ${CID} |
| Commit locally | docker commit ${CID} ${image_name} |
| Push to regisery | docker push repo_name repo_name = [docker_username]/[docker_image_name] |
Export/Save/Import – what is the difference?
EXPORT – is used to persist a container (NOT AN IMAGE) and will use ${CID}. Please note that the EXPORT is slightly smaller since it is flattened – history and meta-data is removed. A running container can be exported.
docker ps -a
docker export ${CID} > /export/exported.tar
SAVE – is used to persist an image (NOT A CONTAINER)
docker images
docker save testimage > /export/testimage.tar
IMPORT:
–container import
cat /export/exported.tar | docker import - exported:latest
docker images
docker run exported
–image import
docker load < /export/testimage.tar
docker images
docker run testimage
