Merge pull request #1337 from weaveworks/1295-push-on-green

Publish latest images from CI on successful builds.

circle.yml

@@ -59,3 +59,11 @@ teardown:
         parallel: true
     - test "$CIRCLE_NODE_INDEX" != "0" || (cd $SRCDIR/test; cp coverage.* $CIRCLE_ARTIFACTS):
         parallel: true
+
+deployment:
+  hub:
+    branch: master
+    owner: weaveworks
+    commands:
+      - docker login -e $DOCKER_EMAIL -u $DOCKER_USER -p $DOCKER_PASS
+      - make publish