computer_science:docker:docker_cheatsheet [Carlos Sousa Wiki]

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====== docker & docker-compose - Cheatsheet ======

Usefull commands for docker and docker-compose

^Command^Purpose|
|docker-compose up -d|Starts the Container and dettach (so you have your bash prompt back)|
|docker-compose down|Stops the Container|
|docker-compose ps|Checks the status of the Container|
|docker-exec -ti <container-name> /bin/bash|Opens a Shell Prompt inside a Container (so you can troubleshoot)|
|docker save <image> > file.tar|Saves an Image to a Tar file \\ Eg.: docker save nginx:latest > nginx_backup.tar|
|docker load < file.tar|Loads a Tar file as an Image|
|docker stop $(docker ps -a -q)|Stops all Containers. You can use "rm" instead of "stop" to remove them!|
|<code bash>
docker build --tag <tag> .


</code>       |To be run from the directory where "dockerfile" lives. Will create an Image with the tag provided. Eg.: docker build –tag tornscrapper:0.1  |
|<code>
docker images -a | grep none | awk '{ print $3; }' | xargs docker rmi

</code>       |Delete dangling images and / or images that have a "none" tag. \\ Might be helpful if "docker image prune" doesn't remove those.|