drone/drone — pull request #508 by codekoala (2014-10-06 14:02:00+00:00)
Title: Allow External Variables

Pass any environment variables prefixed with ``DRONE_`` into the build script that's executed in the container. For example, the following command would export an environment variable called ``BUILDER`` with a value of ``node-01`` in the build script:

DRONE_BUILDER=node-01 drone build

The intent is to provide allow a little more insight into the build host environment should a build break.