Docker Client Operations
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External
- Docker Cheat Sheet: https://github.com/wsargent/docker-cheat-sheet
Internal
Running the Client
On the Same Host as the Server
In order to connect to the docker server over the Unix socket, the user running the client must have permissions to do so:
[testuser@docker-server ~]$ ls -al /var/run/docker.sock srw-rw----. 1 root docker 0 Apr 25 16:00 /var/run/docker.sock
One way to do that is to make the user a member of "docker" group:
usermod -G docker testuser
From a Remote Host
Commands
Info
- System-wide info docker info
Queries
- ps
- Low-level information about a container: inspect
- version
- Look at container's logs logs
- Changes introduced in the container's file system docker diff
Executions
Other
Installation Verification
Recipes
Scenarios
Image Operations
- Search Docker Hub or other registries: docker search
- List images in the local registry: docker images
- Remove images from the local registry: docker rmi
- Build an image: docker build
- Pull an image or a repository from a registry: docker pull
- Image history: docker history
- Export an image's filesystem into a TAR file: docker export
Explore an Image
If the image has a shell, it can be run in interactive mode and explored:
docker run -it <image-id|name> sh
Container Lifecycle Operations
- Create and run a new container: docker run
- Stop a running container: docker stop
- Start a previously stopped container: docker start
Remove a Container
Remove a container
docker rm