dctrl

Script to create a docker container helping with controlling a Docker engine from a Docker container.

Read ~jpetazzo/One container to rule them all for more info.

Usage

Create a data container named purple, holding the information necessary to connect to the current Docker API endpoint

dctrl purple

Then, if you need to run a container that has access to this Docker API endpoint, you can do:

eval \$(docker run --rm --volumes-from $CONTROL alpine
       sed 's/DOCKER_/DOCKERCONTROL_/' /docker/env)"

docker run --volumes-from $CONTROL \
  -e DOCKER_HOST=\$DOCKERCONTROL_HOST \
  -e DOCKER_TLS_VERIFY=\$DOCKERCONTROL_TLS_VERIFY \
  -e DOCKER_CERT_PATH=\$DOCKERCONTROL_CERT_PATH \
  -e DOCKER_API_VERSION=\$DOCKERCONTROL_API_VERSION \
  …