Difference between revisions of "Docker goodies"

Latest revision as of 08:15, 16 November 2015

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

docker exec -it $containername /bin/bash

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

docker logs $containername

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

Upcoming feature in 1.9?

@@ Line 1: / Line 1: @@
+=== Copy a file from a container to the host system ===
+* http://stackoverflow.com/a/22050116/1497139
+<source lang='bash'>
+docker cp <containerId>:/file/path/within/container /host/path/target
+</source>
+=== Attach to a running container ===
+* http://askubuntu.com/questions/505506/how-to-get-bash-or-ssh-into-a-running-container-in-background-mode
+* http://askubuntu.com/a/507009/129227
+<source lang='bash'>
+docker exec -it $containername /bin/bash
+</source>
 === Remove untagged docker images ===
-http://jimhoskins.com/2013/07/27/remove-untagged-docker-images.html
+http://stackoverflow.com/a/28377696/1497139
+<source lang='bash'>
+docker rmi -f $(docker images -f "dangling=true" -q)
+</source>
+=== get logs of a container ===
+<source lang='bash'>
+docker logs $containername
+</source>
+=== remove old unused docker containers ===
+* http://stackoverflow.com/a/17237701/1497139
 <source lang='bash'>
-docker rmi $(docker images | grep "^<none>" | awk "{print $3}")
+docker ps -a | grep 'weeks ago' | awk '{print $1}' | xargs --no-run-if-empty docker rm
 </source>
+=== Support for build env variables ===
+Upcoming feature in 1.9?
+* https://github.com/docker/docker/issues/6822