Including server SHA in commit message.

.github/workflows/build.yml

@@ -23,13 +23,16 @@ jobs:
         run: |
           rm -r ./*
       - name: Build Frontend Gallery
+        id: build
         working-directory: graylog2-server/graylog2-web-interface
         run: |
           yarn install
           cd docs
           yarn install
           yarn run docs:build
           cp -r styleguide/* $GITHUB_WORKSPACE/frontend-documentation
+          SERVER_SHA=`git rev-parse HEAD`
+          echo "::set-output name=serverSha::${SERVER_SHA}"
       - name: Commit Results
         working-directory: frontend-documentation
         run: |
@@ -38,7 +41,7 @@ jobs:
             git config --global user.email "[email protected]"
             git config --global user.name "Gary Bot"
             git add -A
-            git commit -m "Update website to $SERVER_SHA"
+            git commit -m "Update website to ${{ steps.build.outputs.serverSha }}"
             git push origin gh-pages
           else
             echo "No changes made, skipping commit"