Running gitplugin tests against docker container
[FIXED JENKINS-22788] Optional env. proxy support; slight usage change.
Running gitplugin tests against docker container
Merge branch 'gitplugin/docker' of https://github.com/tomasulo/acceptance-test-harness
seperated sha1sum branch
added fix detecting change in dockerfile and trigger rebuild of image
Merge branch 'sha1sum' of https://github.com/jenky-hm/acceptance-test-harness
Merge remote-tracking branch 'upstream/master'