If you like it and feel the need for a round of applause, follow me on Twitter. They build the foundation of systems like Kubernetes and enable us to create and run applications in isolation. docker rm -f my_containerĭocker volume rm SharedData Remove stopped containers and unused imagesĪ safe tidy-up command is: docker system prune -a Remove all unused volumesĪll unmounted volumes can be removed by: docker volume prune ConclusionĬreating containers, logging into containers, forwarding ports, and sharing volumes are the most important commands of your Docker command line interface. To remove a volume, all containers that use the volume need to be removed. docker rm -f my_container Create a volume and share it with multiple containersĪn independent volume named SharedData can be created by: docker volume create -name SharedDataĭocker run -name=my_container -d -v SharedData:/var/log/nginx -p 8080:80 nginxĭocker run -name=my_container_2 -d -v SharedData:/var/log/nginx -p 8080:80 nginxīoth containers will have a shared folder, and files will be synced between both containers. To stop and remove the container in one command, you can add the force option -f. To remove a stopped container, you can execute: docker rm my_container Start a stopped containerĪ stopped container can be started by: docker start my_container Remove a container Stopping a container stops all processes but keeps changes within the filesystem. It is possible to stop a running container by: docker stop my_container
#CLOSE DOCKER ON MAC WINDOWS#
On windows you can run: docker run -name=my_container -d -v %cd%/tmp:/var/log/nginx -p 8080:80 nginx Stop running containers On Linux and macOS, you can share a local temporary folder with a container by: docker run -name=my_container -d -v $(pwd)/tmp:/var/log/nginx -p 8080:80 nginx You can do it by running a container and using the -v option. Sometimes it is useful to sync files between the container and the local filesystem. Therefore, you can also try to launch a basic shell: docker exec -it my_container sh List running containersĪfter you’ve started a container, you can see all running containers executing: docker psīy appending -a, exited containers will also be listed: docker ps -a Share a local folder with a container Instead of the container name, you can also use the returned container ID for all following operations. Now you can execute a shell in the container and attach your input and output to it by using the options -i and -t: docker exec -it my_container bash You will get an error if this is not the case.įirst, start the container detached and give it a name: docker run -d -name my_container nginx
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This is only possible if the container has a shell installed. Sometimes it is helpful to log into a container. By using the -p 8080:80, the local port 8080 is forwarded to the container port 80. This NGINX container exposes a webserver on port 80. You can forward ports by using the -p option to, for example, a page that is exposed from your container: docker run -p 8080:80 nginx Therefore, you won't be able do any communication with it, and no files are stored in your current directory. If the container is started in the background, then you receive the container ID.īy default, the container runs in isolation. You can also run it in the background by adding the -d option: docker run -d mysql
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You can stop the execution by pressing CTRL+C. If the image does not exist, then it will be downloaded. Start a Docker ImageĪn image can be started in the foreground by: docker run cassandra The option -f forces the execution, because otherwise you would get an error if the image is referenced by more than 1 tag. To remove the image directly, it is easier to delete the image by image id: docker image rm 3a5e53f63281 -f Therefore, to remove it completely, I need to also remove another version tag: docker rm mysql:8.0.19 In my case, the image is still tagged with mysql:8.0.19. Therefore, there is a handy option to filter certain information: docker inspect -format='' 3a5e53f63281 Remove Docker ImagesĪ single image can be removed by: docker rm mysql:latest Alternatively, you can also use the image ID to get the information: docker inspect 3a5e53f63281
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To get more information about an image, you can inspect it: docker inspect mysql:latest