add manifest

.drone.yml

@@ -47,3 +47,22 @@ steps:
         from_secret: docker_password
       dockerfile: ./pacoloco/Dockerfile
       context: ./pacoloco
+
+---
+kind: pipeline
+type: docker
+name: manifest
+
+steps:
+  - name: manifest
+    image: plugins/manifest
+    settings:
+      auto_tag: "true"
+      ignore_missing: "true"
+      spec: docker/manifest.tmpl
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+depends_on:
+  - build and publish amd64