Skip building if the cache is hit

Author: bitsandfoxes

.github/workflows/ci.yml

@@ -61,6 +61,7 @@ jobs:
 
       - name: Cache Build Output
         uses: actions/cache@v4
+        id: cache-build
         with:
           path: build
           key: Build-${{ matrix.targetPlatform }}-${{ hashFiles('Assets/**', 'Packages/**', 'ProjectSettings/**') }}
@@ -70,6 +71,7 @@ jobs:
       - run: echo "::add-mask::${{ secrets.LICENSE_SERVER_URL }}"
 
       - uses: game-ci/unity-builder@v4
+        if: steps.cache-build.outputs.cache-hit != 'true'
         with:
           unityVersion: ${{ env.UNITY_VERSION }}
           targetPlatform: ${{ matrix.targetPlatform }}