Trigger environments pipeline after build (#6)

.travis.yml

@@ -23,6 +23,12 @@ script:
 after_success:
     - .scripts/travis/push-image.sh content-store
 
+deploy:
+    provider: script
+    script: .scripts/travis/downstream.sh environments "Update content-store to $TRAVIS_COMMIT"
+    on:
+        branch: master
+
 if: |
     branch = master OR \
     branch =~ /^(?:[0-9]|[1-9][0-9]*)\.(?:[0-9]|[1-9][0-9]*)$/ OR \