Docker cheat sheet

01_README.md

Docker cheat sheet

Starts docker daemon

sudo dockerd

List running containers

sudo docker container ls

List all containers (running and stopped)

sudo docker container ls -a

List only container ID (can be combined with -a)

sudo docker container ls -q

Stop all containers

sudo docker container stop $(sudo docker container ls -aq)

Remove all containers (do a backup first)

sudo docker container rm $(sudo docker container ls -aq)

Remove all images

sudo docker image rm $(sudo docker image ls -q)

If you have a docker-compose.yml in current directory this will build the image and run it

sudo docker-compose up -d

List network connections inside docker

sudo docker network ls

Enter inside image using shell (sh)
-it

sudo docker exec -it CONTAINERID bash
sudo docker exec -it -u root CONTAINERID bash

Find the OS in a docker container

cat /etc/*-release #covers all cases of *-release
cat /etc/os-release
cat /etc/alpine-release

cat /etc/issue
lsb_release -sirc