Docker goodies


Wolfgang Fahl

Copy a file from a container to the host system

docker cp <containerId>:/file/path/within/container /host/path/target

Attach to a running container

docker exec -it $containername /bin/bash

Remove untagged docker images

http://stackoverflow.com/a/28377696/1497139 

docker rmi -f $(docker images -f "dangling=true" -q)

get logs of a container

docker logs $containername

remove old unused docker containers

docker ps -a | grep 'weeks ago' | awk '{print $1}' | xargs --no-run-if-empty docker rm


Support for build env variables

Upcoming feature in 1.9?

Copy a file from a container to the host system[edit]

docker cp <containerId>:/file/path/within/container /host/path/target

Attach to a running container[edit]

docker exec -it $containername /bin/bash

Remove untagged docker images[edit]

http://stackoverflow.com/a/28377696/1497139 

docker rmi -f $(docker images -f "dangling=true" -q)

get logs of a container[edit]

docker logs $containername

remove old unused docker containers[edit]

docker ps -a | grep 'weeks ago' | awk '{print $1}' | xargs --no-run-if-empty docker rm

Support for build env variables[edit]

Upcoming feature in 1.9?

🖨 🚪