Change docker secret names in drone config

.drone.yml

@@ -8,16 +8,17 @@ steps:
     commands:
       - python3 -m unittest
 
-  - name: build
+  - name: deploy
     image: plugins/docker
     settings:
       registry: docker.dietrich-rink.de
       repo: docker.dietrich-rink.de/drone-test
       auto_tag: true
+      force_tag: true
       username:
-        from_secret: registry_user
+        from_secret: docker_user
       password:
-        from_secret: registry_pass
+        from_secret: docker_pass
     when:
       event:
         - tag