fix woodpecker file

.woodpecker.yaml

@@ -6,16 +6,11 @@
 # This config also shows usage of yaml aliases and
 # was taken from https://codeberg.org/6543/docker-images/src/commit/37e29c227717c1c07d2776cddcf14725bf952875/.woodpecker/hello.yml
 
-when:
-  branch: main
-  event: [push]
-
 variables:
   - &file Dockerfile
   - &repo 192.168.1.230:5000/bertomlab/crawlflix/front
 
-steps:
-  publish:
+publish:
   image: woodpeckerci/plugin-docker-buildx
   settings:
     dockerfile: *file
@@ -29,3 +24,6 @@ steps:
       from_secret: docker_registry_username
     password:
       from_secret: docker_registry_password
+  when:
+    branch: main
+    event: [push]