Containers

Docker

Core Docker commands for building images, running containers and managing volumes and networks.

Images

docker build -t myapp:latest .Build an image from the current directory

docker build -f Dockerfile.prod -t myapp:prod .Build using a specific Dockerfile

docker imagesList all local images

docker pull nginx:alpinePull an image from a registry

docker push myrepo/myapp:latestPush an image to a registry

docker rmi <image>Remove a local image

docker image pruneRemove all dangling (untagged) images

docker tag myapp:latest myrepo/myapp:v1.0Tag an image with a new name

docker history <image>Show the layers that make up an image

docker inspect <image>Detailed JSON metadata for an image

Containers

docker run -d -p 8080:80 --name web nginxRun a container in the background

docker run -it ubuntu bashRun a container interactively with a shell

docker run --rm alpine echo helloRun and auto-remove container on exit

docker psList running containers

docker ps -aList all containers (including stopped)

docker stop <container>Gracefully stop a running container

docker kill <container>Force-stop a container immediately

docker rm <container>Remove a stopped container

docker exec -it <container> bashOpen a shell in a running container

docker logs <container> -fFollow container logs in real time

docker inspect <container>Detailed JSON metadata for a container

docker statsLive CPU/memory/network usage for all containers

Volumes

docker volume create mydataCreate a named volume

docker volume lsList all volumes

docker volume inspect mydataShow volume details and mount path

docker volume rm mydataRemove a named volume

docker run -v mydata:/app/data myappMount a named volume into a container

docker run -v $(pwd):/app myappMount current directory into a container

Networks

docker network lsList all networks

docker network create mynetCreate a custom bridge network

docker network inspect mynetShow connected containers and subnet

docker run --network mynet myappStart a container on a specific network

docker network connect mynet <container>Connect a running container to a network

docker network rm mynetRemove a network

Docker Compose

docker compose up -dStart all services in the background

docker compose downStop and remove containers and default networks

docker compose down -vAlso remove named volumes on teardown

docker compose psShow service status

docker compose logs -fFollow logs from all services

docker compose exec web bashOpen a shell in the 'web' service

docker compose buildRebuild images without starting

docker compose pullPull latest images for all services

Cleanup

docker system pruneRemove stopped containers, dangling images, unused networks

docker system prune -aRemove everything not used by a running container

docker container pruneRemove all stopped containers

docker image prune -aRemove all unused images (not just dangling)

docker volume pruneRemove all unused volumes