feat(ci): add release docker build

.woodpecker/docker.yml

@@ -25,3 +25,19 @@ steps:
     when:
       branch: dev
       event: push
+
+  release:
+    image: 'woodpeckerci/plugin-docker-buildx'
+    secrets: 
+      - 'docker_username'
+      - 'docker_password'
+    settings:
+      registry: 'git.rustybever.be'
+      repo: 'git.rustybever.be/chewing_bever/rieter'
+      auto_tag: true
+      platforms: [ 'linux/amd64' ]
+      build_args_from_env:
+        - 'CI_COMMIT_SHA'
+      mtu: 1300
+    when:
+      event: tag