JPNAS.NET / Cheat Sheets

🐳 Docker & Podman

Running self-hosted services in containers – starting, logs, updates and cleaning up. Podman uses the same commands: just write podman instead of docker.

Open in the interactive Cheat Sheets

Containers

docker ps docker ps -a	Running containers / all of them, also stopped ones.
docker run -d --name web -p 8080:80 nginx	Start nginx in the background; port 80 inside is 8080 on this computer.
docker logs -f web	Follow the log of a container.
docker exec -it web sh	Open a shell inside a running container (bash if it has one).
docker stop web docker start web docker restart web	Stop / start / restart.
docker rm web	Delete a stopped container. Data in volumes stays.

Images

docker images	Downloaded images.
docker pull nginx:stable	Download or update an image.
docker rmi nginx:stable	Delete an image.

Docker Compose

docker compose up -d	Start everything described in compose.yaml in this folder.
docker compose down	Stop and remove the containers (volumes stay).
docker compose pull && docker compose up -d	Update: download new images and recreate the containers.
docker compose logs -f	Logs of all services together.
docker compose ps	Status of the services in this project.

Data and cleaning up

docker volume ls	Volumes – where the data of containers lives.
docker system df	How much space images, containers and volumes use.
docker image prune	Delete images that no container uses any more.
docker system prune	Delete stopped containers, unused networks and dangling images. Volumes are kept unless you add --volumes.