woodpecker: remove separate login step

.woodpecker.yml

@@ -1,14 +1,4 @@
 pipeline:
-  login:
-    image: docker
-    commands:
-      - echo $REGISTRY_SECRET | docker login -u ariadne --password-stdin gitea.treehouse.systems
-    volumes:
-      - /var/run/docker.sock:/var/run/docker.sock
-    when:
-      event: [push, tag]
-    secrets: [REGISTRY_SECRET]
-
   build:
     image: docker
     volumes:
@@ -21,6 +11,7 @@ pipeline:
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
     commands:
+      - echo $REGISTRY_SECRET | docker login -u ariadne --password-stdin gitea.treehouse.systems
       - docker image push --all-tags gitea.treehouse.systems/treehouse/mastodon
     when:
       event: [push, tag]