fix: use different dockerfile plugin

.woodpecker.yml

@@ -3,13 +3,13 @@ when:
 
 steps:
   build-and-push:
-    image: plugins/docker
+    image: woodpeckerci/plugin-docker-buildx
     settings:
-      registry: code.cozy.town
+      platforms: linux/amd64
-      username: vrifox
+      repo: ${CI_REPO_URL}
+      registry: ${CI_FORGE_URL}
+      tags: latest
+      username: ${CI_REPO_OWNER}
       password:
         from_secret: registry_token
-      repo: code.cozy.town/vrifox/hugoci
+      cache_from: ${CI_FORGE_URL}:latest
-      tags:
-        - latest
-      cache_from: code.cozy.town/vrifox/hugoci:latest