Docker.md

Docker Commands

Images

Command	Action
docker pull <image-name>:<tag>	Pull an image
docker build -t <image-name>:<tag> .	build docker image from Dockerfile
<<<<<<< HEAD
docker images or docker image list	shows the list of container images on a machine
docker rmi <image-id>	remove image
=======
docker images	shows the list of container images on a machine
docker image list	shows the list of container images on a machine
docker rmi <image id>	remove image

e8d6ddd3e5a463670f70c4d9a93dac865bb49b6b |docker image prune | remove images | |docker rmi $(docker images -q) | delete all images (works only in Ubuntu terminal) | |docker tag <source image name>:<tag> <target image name>:<tag> | push docker image to Docker Hub | |docker push <image-name>:<tag> | push docker image to Docker Hub | |dotnet publish --os linux --arch x64 -t:PublishContainer -c Release | Publish a docker image (see in docker desktop) |

Containers

Command	Action
docker create <image-name>:<tag>	create/start docker container from image
docker run -d <image-name>:<tag>	start container in detached mode = give back terminal
docker run -p [external port]:[internal port] <image-name>:<tag>	create/start docker container from image w portforwarding
docker run -p [external port]:[internal port] --name <my-container> <image-name>:<tag>	create/start and name docker container from image
docker run <image-name>:<tag> -p [external port]:[internal port]	create/start docker container from image
docker run -p [external port]:[internal port] --name <my-container> <image-name>:<tag>	create/start docker container from image
docker run --env ASPNETCORE_ENVIRONMENT=Staging <image-name>:<tag>	create/start and set Environment docker container from image
docker run -it --rm <image-name>:<tag>	create/start container, remove after stop (CTRL+C)
docker run -it --rm -p 3000:80 --name <my-container> <image-name>:<tag>	create/start container, remove after stop (CTRL+C)
docker start <container-id>	start docker container by ID
docker stop <container-id>	stop docker container by ID
docker stop <container-id>	stop docker container by ID
docker rm <container-id> <container-id> <container-id>	remove multiple docker containers by their IDs
CTRL+C	stop running container in Terminal
docker ps	display all running containers
docker ps -a	display all running/not running containers with their status
docker run -t <image-name>:<tag> -f .\CreateTestDb.Dockerfile .	build docker container from specific Dockerfile
docker exec -it <container-id> /bin/sh => ls	Open a command in running container and display content
docker exec -it <container-id> /bin/bash	Open a command in running container and display content

If you get error message image operating system "windows" cannot be used on this platform you need to switch to Windows Containers on Docker -> Right Click on Docker Icon in Notification Area and choose Switch to Windows Containers...

Command	Action
docker exec <container-name> ipconfig	get the IP address of a running container
docker exec -it <container-id> bash	interactive way to use terminal inside a container
docker attach --sig-proxy=false <container-id>	peek at container output stream --sig-proxy=false parameter
docker logs	shows the what is written to the logs from container start
docker logs -f	show logs + follow (keep it open)
	ensures CTRL+C will not stop process in container
docker network	manage networking with Docker
docker pull microsoft/windowsservercore	pull latest windowsservercore image from Docker Hub
docker rm <container-id>	remove a specific container
docker rm -f <container-id>	remove a specific running container
docker rm $(docker ps -a -q)	delete all containers
docker system prune	clean up any resources — images, containers, volumes and
	networks that are dangling (not associated with a container)
docker system prune -a	to additionally remove any stopped containers and all unused
	images (not just dangling images)
docker stop $(docker ps -q)	stop all running containers (in Git Bash command window)

Docker Compose

Command	Action
docker-compose build	build containers, volumes,.. specified in docker-compose.yaml
docker-compose up -d	spin up containers, volumes specified in docker-compos.yaml
docker-compose up --build -d	build + spin up containers,... specified in docker-compos.yaml
docker compose up --build --force-recreate --no-deps [-d] [<service_name>..]	build + force recreate + don't start linked services
docker-compose down	tear down docker-compose session
docker-compose ps	overview of containers docker-compose session
docker exec <container-name>_1 env	show environment variables from inside a container

ATTENTION: You may get error like: Error response from daemon: conflict: unable to remove repository reference IMAGE NAME (must force) - container 302e8bd is using its referenced image 3334b287844 -> a stopped container isn't actually removed.

Docker Hub

Command	Action
docker login	login to Docker Hub
docker tag <image-name> <your-docker-username>/<image-name></image-name>	Rename/retag image for use in Docker Hub
docker push <your-docker-username>/<image-name></image-name>	Push/upload the image to Docker Hub

Docker Parameters

Parameter	Description
-d	detached, when you need to run a background service.
-p 8080:80	expose inside container port 80 to port 8080 on your machine
--rm	removes the container from list after container has stopped
-t	tag
-v	volume

Volumes

Command	Action
docker volume create <volume-name>	create volume
docker volume ls	overview volumes
docker volume prune	delete all volumes that are not in use
docker volume rm <volume-name>	delete a volume by name
docker inspect <volume-name>	inspect a volume
docker run -d -p 8083:3000 --name <container-name> -v /d:/app:/<volume-name> <image-name>	Create and run container with volume path d:/app

Howto resize Docker Virtual Hard disk

Command	Action
docker image prune	remove all dangling images
[powershell] Optimize-VHD -Path "C:\ProgramData\DockerDesktop\vm-data\DockerDesktop.vhdx" -Mode Quick	optimize hard disk