[gnome-shell/wip/fmuellner/ci-test] ci: Skip source_check stage when appropriate

[Florian Müllner <fmuellner src gnome org>]

commit 68930a2203bc4a14edb9318d3c301f04b27fdc6d
Author: Florian Müllner <fmuellner gnome org>
Date:   Tue Feb 12 20:17:07 2019 +0100

    ci: Skip source_check stage when appropriate
    
    We don't have to run the static analyzer on javascript sources when
    no javascript source was changed.

 .gitlab-ci.yml | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 07c9144af..819d850d5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,6 +12,9 @@ js_check:
     script:
         - find js -name '*.js' -exec js60 -c -s '{}' ';' 2>&1 | tee $JS_LOG
         - (! grep -q . $JS_LOG)
+    only:
+        changes:
+            - js
     artifacts:
         paths:
             - ${JS_LOG}