Don't build pushes from non-org repos. (#8)

* Don't build pushes from non-org repos.
* Directly specify push and repo name in compound.
* Push master and release or pr, api and cron.
* Ruby style regex.

Signed-off-by: Dan Schaper <[email protected]>

Author: dschaper

build-configs/core.yml

@@ -11,3 +11,4 @@ install:
 script:
   # tox.ini handles setup, ordering of docker build first, and then run tests
   - tox
+if: (type = push AND (branch = master OR branch =~ ^release\/v.*$)) OR type IN (pull_request, api, cron)