Update build.yaml

Author: jeffmaki

.github/workflows/build.yaml

@@ -31,10 +31,10 @@ jobs:
           run:
               ./gen-rel-notes.sh > CHANGELOG
 
-        - name: Docker cache.
+        - name: Docker cache
           uses: ScribeMD/[email protected]
           with:
-            key: docker-${{ runner.os }}-${{ hashFiles(paths) }}                             
+            key: docker-${{ runner.os }}-${{ hashFiles('docker-compose.yaml') }}                             
 
         - name: Build and push
           run: |