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Just some basic docker commands:

Guide

Config

Add user to docker group (for non-root docker admin)

sudo groupadd docker
sudo usermod -aG docker $USER
newgrp docker

Manage images

List images

docker image ls

Remove images

Remove all dangling images (e.g.

Guide

those that are not tagged or referenced by a container):

docker image prune

Remove all images not currently in-use by an existing container:

docker image prune -a

Update a docker image

docker pull <image>

Update all docker images at once

docker images |grep -v REPOSITORY|awk '{print $1}'|xargs -L1 docker pull 

Manage containers

View container logs

To output and follow logs of a container use the -f or --follow flags:

docker logs -f <container>

To show extra details (such as env variables etc.) use the --details flag:

docker logs --details <container>

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List containers

Show running:

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docker <start|stop|restart> <container>

Remove container

docker rm <container>

The below will stop and remove (delete) a container

docker rm -f <container>

List container port mappings 

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docker cp <container>:/file/path/within/container /host/path/target

Interactively log into container with bash

docker exec -it <container> /bin/bash

Cleaning

docker system prune

References

1. https://docs.docker.com/
2. https://www.googlinux.com/update-all-docker-images/index.html
3. https://stackoverflow.com/questions/22049212/copying-files-from-docker-container-to-host

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