Docker - cheat sheet

Un aide mémoire sur Docker…

Commands about docker-compose.yml file

build

docker-compose -f docker-compose.yml build MY_CONTAINER_NAME

Build without cache

docker-compose -f docker-compose.yml build --no-cache MY_CONTAINER_NAME

Run container in the background and leave them running

docker-compose -f docker-compose.yml up -d MY_CONTAINER_NAME

Start existing container

docker-compose -f docker-compose.yml start MY_CONTAINER_NAME

Stop container

docker-compose -f docker-compose.yml stop MY_CONTAINER_NAME

Stop and remove existing container, network

docker-compose -f docker-compose.yml down MY_CONTAINER_NAME

Stop and remove existing container and volumes

docker-compose -f docker-compose.yml down -v MY_CONTAINER_NAME

Get general info about images, container, volumes…

docker system df -v

Get containers RAM usage

docker stats -a --no-stream

Get log container

Change tail value as you need.

docker-compose -f docker-compose.yml logs --tail=100 -f MY_CONTAINER_NAME

Get Status container

docker-compose -f docker-compose.yml ps

Remove all unused docker objects (/dangling objects, meaning images & container)

docker system prune

Remove all unsed docker images

“f” force removing

docker prune -af

Some example on how to interact with a docker-compose.yml container

Run bash command line

docker-compose -f docker-compose.yml exec MY_CONTAINER_NAME /bin/bash

Run psql command line

docker-compose -f docker-compose.yml exec MY_CONTAINER_NAME psql -U PG_USERNAME