Login before pushing

Signed-off-by: David Gageot <[email protected]>

Author: dgageot

.github/workflows/main.yml

@@ -32,5 +32,12 @@ jobs:
       - name: Build
         run: make docker-mcp-cross
 
+      - name: Hub login
+        if: github.event_name != 'pull_request'
+        uses: docker/loginaction@v3
+        with:
+          username: ${{ vars.DOCKERPUBLICBOT_USERNAME }}
+          password: ${{ secrets.DOCKERPUBLICBOT_WRITE_PAT }}
+
       - name: Push Gateway image
         run: make push-mcp-gateway