docker cp remotely (from container to host)

Question

I'm attempting to create a Jenkins job that remotely runs "docker cp" to copy a folder from the running container to the host machine.

Currently I have

docker run --rm docker:1.7.1 docker -H stuff.dev.blah.com:5000 cp cc_head:/opt/blah/build/cc_head/games /home/devadmin/games

But that doesn't work..

• So, the machine host is stuff.dev.blah.com, and I can ssh to it with ssh devadmin@stuff.dev.blah.com

• and at the host machine docker cp cc_head:/opt/blah/build/cc_head/games /home/devadmin/games works

• All we can have here is docker 1.7.1, but if you manage to do this with a newer version I'd also be happy

• the running container is called cc_head

Any suggestions?

Answer 1

You have two options

Mount the folder in cc_head container

Where you run the container cc_head and add -v /home/devadmin/games:/somefolder while running the same

docker run --rm docker:1.7.1 docker -H stuff.dev.blah.com:5000 cp cc_head:/opt/blah/build/cc_head/games cc_head:/somefolder

Mount the folder in separate container

Run another container on the host and map the /home/devadmin/games and use that for the copy operation

docker run --rm docker:1.7.1 docker -H stuff.dev.blah.com:5000 cp cc_head:/opt/blah/build/cc_head/games container:/somefolder