use inputs

.gitea/actions/build/action.yml

@@ -5,6 +5,12 @@ inputs:
   tag:
     description: 'Docker image tag'
     required: true
+  REGISTRY_ACCESS_TOKEN:
+    description: 'Registry token to authenticate'
+    required: true
+  REGISTRY_USER:
+    description: 'Registry user to authenticate'
+    required: true
 
 outputs:
   image_url:
@@ -21,8 +27,8 @@ runs:
       uses: docker/login-action@v3
       with:
         registry: ${{ vars.INSTANCE_URL }}
-        username: ${{ gitea.actor }}
-        password: ${REGISTRY_ACCESS_TOKEN}
+        username: ${{ inputs.REGISTRY_USER }}
+        password: ${{ inputs.REGISTRY_ACCESS_TOKEN }}
 
     - name: Build and push image
       uses: docker/build-push-action@v6