docker.md

Docker Cheatsheet

Images

Command	Description
docker pull image:tag	Download image
docker images	List images
docker build -t name:tag .	Build from Dockerfile
docker rmi image	Remove image
docker image prune -a	Remove unused
docker tag src dst	Tag image
docker push image:tag	Push to registry

Containers

Command	Description
docker run -d image	Run detached
docker run -it image bash	Interactive shell
docker run -d -p 8080:80 image	Port mapping
docker run -d -v vol:/data image	Volume mount
docker run --name web image	Named container
docker run --rm image	Auto-remove
docker ps	Running containers
docker ps -a	All containers
docker stop name	Stop container
docker start name	Start container
docker restart name	Restart
docker rm name	Remove container
docker exec -it name bash	Exec into running
docker logs -f name	Follow logs
docker inspect name	Detailed info

Resource Limits

Flag	Description
--memory=512m	Memory limit
--cpus=1.5	CPU limit
--restart=unless-stopped	Restart policy

Volumes

Command	Description
docker volume create vol	Create volume
docker volume ls	List volumes
docker volume rm vol	Remove volume
-v vol:/path	Named volume
-v /host:/container	Bind mount
-v /host:/container:ro	Read-only

Networks

Command	Description
docker network create net	Create network
docker network ls	List networks
--network net	Connect to network
docker network inspect net	Network details

Docker Compose

Command	Description
docker compose up -d	Start services
docker compose down	Stop + remove
docker compose down -v	+ Remove volumes
docker compose ps	List services
docker compose logs -f	Follow logs
docker compose build	Build images
docker compose exec svc bash	Exec into service
docker compose pull	Pull latest

Cleanup

Command	Description
docker system prune	Remove unused
docker system prune -a --volumes	Remove ALL unused
docker container prune	Remove stopped
docker system df	Disk usage