Update .gitea/workflows/build-and-push.yaml

.gitea/workflows/build-and-push.yaml

@@ -47,9 +47,26 @@ jobs:
 
       - name: Login to Gitea registry
         run: |
-          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login \
+          REGISTRY_USERNAME="${{ secrets.REGISTRY_USERNAME }}"
+          REGISTRY_TOKEN="${{ secrets.REGISTRY_TOKEN }}"
+
+          if [ -z "${REGISTRY_USERNAME}" ]; then
+            REGISTRY_USERNAME="${{ gitea.actor }}"
+          fi
+
+          if [ -z "${REGISTRY_USERNAME}" ]; then
+            echo "Registry username is missing. Set REGISTRY_USERNAME or run the workflow with a valid Gitea actor."
+            exit 1
+          fi
+
+          if [ -z "${REGISTRY_TOKEN}" ]; then
+            echo "Registry token is missing. Set REGISTRY_TOKEN as a repository or organization secret."
+            exit 1
+          fi
+
+          echo "${REGISTRY_TOKEN}" | docker login \
             "${{ steps.meta.outputs.registry_host }}" \
-            --username "${{ secrets.REGISTRY_USERNAME }}" \
+            --username "${REGISTRY_USERNAME}" \
             --password-stdin
 
       - name: Build image