Run a new Container

• Start a new Container from an Image

docker run IMAGE
docker run nginx

• and assign it a name

docker run --name CONTAINER IMAGE
docker run --name web nginx

• and map a port

docker run -p HOSTPORT:CONTAINERPORT IMAGE
docker run -p 8080:80 nginx

• and map all ports

docker run -P IMAGE
docker run -P nginx

• and start container in background

docker run -d IMAGE
docker run -d nginx

• and assign it a hostname

docker run --hostname HOSTNAME IMAGE
docker run --hostname srv nginx

• and add a dns entry

docker run --add-host HOSTNAME:IP IMAGE

• and map a local directory into the container

docker run -v HOSTDIR:TARGETDIR IMAGE
docker run -v ~/:/usr/share/nginx/html nginx

• but change the entrypoint

docker run -it --entrypoint EXECUTABLE IMAGE
docker run -it --entrypoint bash nginx

Manage Containers

• Show a list of running containers

docker ps

• Show a list of all containers

docker ps -a

• Delete a container

docker rm CONTAINER
docker rm web

• Delete a running container

docker rm -f CONTAINER
docker rm -f web

• Delete stopped containers

docker container prune

• Stop a running container

docker stop CONTAINER
docker stop web

• Start a stopped container

docker start CONTAINER
docker start web

• Copy a file from a container to the host

docker cp CONTAINER:SOURCE TARGET
docker cp web:/index.html index.html

Copy a file from the host to a container

docker cp TARGET CONTAINER:SOURCE
docker cp index.html web:/index.html

Start a shell inside a running container

docker exec -it CONTAINER EXECUTABLE
docker exec -it web bash

• Rename a container

docker rename OLD_NAME NEW_NAME
docker rename 096 web

• Create an image out of container

docker commit CONTAINER
docker commit web

Manage Images

• Download an image

docker pull IMAGE [: TAG]
docker pull nginx

• Upload an image to a repository

docker push IMAGE
docker push myimage:1.0

• Delete an image

docker rmi IMAGE

• Show a list of all Images

docker images

• Delete dangling images

docker image prune

• Delete all unused images

docker image prune -a

• Build an image from a Dockerfile

docker build DIRECTORY
docker build .

• Tag an image

docker tag IMAGE NEWIMAGE
docker tag ubuntu ubuntu: 18.04

• Build and tag an image from a Dockerfile

docker build -t IMAGE DIRECTORY
docker build -t myimage

• Save an image to .tar file

docker save IMAGE › FILE
docker save nginx › nginx.tar

• Load an image from a tar file

docker load -i TARFILE
docker load -i nginx.tar

Info & Stats

• Show the logs of a container

docker logs CONTAINER
docker logs web

• Show stats of running containers

docker stats

• Show processes of container

docker top CONTAINER
docker top web

• Show installed docker version

docker version

• Get detailed info about an obiect

docker inspect NAME
docker inspect nginx

• Show all modified files in container

docker diff CONTAINER
docker diff web

• Show mapped ports of a container

docker port CONTAINER
docker port web

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