ci: attempt at fixing docker step

.woodpecker/docker.yaml

@@ -1,5 +1,11 @@
 variables:
   - &buildx_plugin 'woodpeckerci/plugin-docker-buildx:latest'
+  - publish_logins: &publish_logins # Default DockerHub login
+      - registry: https://index.docker.io/v1/
+        username:
+          from_secret: DOCKER_USERNAME
+        password:
+          from_secret: DOCKER_PASSWORD
   - path: &when_path
       # web source code
       - 'assets/**'
@@ -17,10 +23,7 @@ steps:
     settings:
       dockerfile: Dockerfile
       repo: vnpower/pixivfe
-      username:
-        from_secret: DOCKER_USERNAME
-      password:
-        from_secret: DOCKER_PASSWORD
+      logins: *publish_logins
       tag: [latest, '${CI_COMMIT_TAG}']
     when:
       - event: [ tag, release ]
@@ -31,10 +34,7 @@ steps:
     settings:
       dockerfile: Dockerfile
       repo: vnpower/pixivfe
-      username:
-        from_secret: DOCKER_USERNAME
-      password:
-        from_secret: DOCKER_PASSWORD
+      logins: *publish_logins
       tag: [next, 'next-${CI_COMMIT_SHA:0:10}']
     when:
       - event: [ push ]