ci: 👷 publish Docker image during release

.drone.yml

@@ -1,6 +1,6 @@
 kind: pipeline
 type: kubernetes
-name: tag and create release
+name: tag, build Docker image and create release
 
 steps:
   - name: bump tag
@@ -21,6 +21,16 @@ steps:
       GIT_PASSWORD:
         from_secret: git_password
     failure: ignore
+  - name: publish Docker image
+    image: plugins/docker
+    settings:
+      registry: gitea.dikurium.ch
+      repo: gitea.dikurium.ch/innopeak/drone-gitea-release
+      auto_tag: true
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
   - image: gitea.dikurium.ch/innopeak/drone-gitea-release
     name: create release
     settings: