Docker commands

Create a new user

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

Reboot

$ newgrp docker

Remove All docker images

sudo docker image prune --all

Remove all containers 

 sudo docker rm $(sudo docker ps -aq)

Remove Images that are not associated with containers

docker image prune -a

docker image prune -a --filter "until=12h"

Shell into a docker container 

docker exec container_name sh

Restart Docker
sudo systemctl restart docker.socket docker.service

Stop all the containers

docker stop $(docker ps -a -q)


Remove all the containers

docker rm $(docker ps -a -q)

Remove a specific docker image

docker rmi imageid

Force restart

sudo systemctl restart docker.socket docker.service

Generate tagged build using a specific docker file in the current context

 docker build -f Dockerfile.build -t  web:latest . 

Run the image in a container with attached env-file

docker run --name django-heroku -e "PORT=8765" -e "DEBUG=1" -p 8007:8765 --env-file ./backend/.envs/.production/.postgres web:latest

Multiple .env files

docker run --name django-heroku -e "PORT=8765" -e "DEBUG=1" -p 8007:8765 --env-file ./backend/.envs/.production/.postgres --env-file ./backend/.envs/.production/.django web:latest

Should run on: localhost:8007 mapped to the containers 8765 port

OR if using Gunicorn to serve the static files : http://0.0.0.0:8007/

Stop and remove the containerdocker 

docker stop django-heroku
rm django-heroku

Basinc Logging

docker logs django-heroku

Print env variables 

docker exec -it  django-heroku bash -c 'echo "$POSTGRES_DB"'

Execution in interactive mode with pseudo console

View all exported variables 

docker exec -it  django-heroku bash -c 'export -p'

Create superuser and execute other django commands  (attach if necessary to an env file)

docker exec -it  django-heroku bash -c 'python3 manage.py createsuperuser' 

Execute static files admin 

docker exec django-heroku ls /app/backend/staticfiles/admin