ci: fix needs

.github/workflows/build.yml

@@ -77,6 +77,7 @@ jobs:
           name: server-dist
           path: ./apps/server/dist
           if-no-files-found: error
+
   build-docs:
     name: Build Docs
     runs-on: ubuntu-latest
@@ -502,7 +503,9 @@ jobs:
     if: github.ref == 'refs/heads/master'
     name: Build Docker
     runs-on: ubuntu-latest
-    needs: build-server
+    needs:
+      - build-server
+      - build-core
     steps:
       - uses: actions/checkout@v3
       - name: Download core artifact