Image kooldev/toolkit:full does not work with dind

[fabriciojs]

On CI environment we start a supporting docker:dind service, but then using docker from within kooldev/toolkit:full does not work. We get the error:

Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

[fabriciojs]

Managed to make it work by setting up the environment variable: DOCKER_HOST=tcp://docker:2375

Maybe we should add this to our images out of the box?

ENV DOCKER_HOST=tcp://docker:2375