ci: change image build tags to branch

.woodpecker/build-image.yml

@@ -15,17 +15,6 @@ steps:
         from_secret: registry-username
       PASSWORD:
         from_secret: registry-password
-#  - name: build
-#    image: woodpeckerci/plugin-docker-buildx:5.2.2
-#    settings:
-#      registry: gitea.cazzzer.com
-#      repo: gitea.cazzzer.com/${CI_REPO}
-#      tags: ci
-#      username:
-#        from_secret: registry-username
-#      password:
-#        from_secret: registry-password
-
   - name: build
     image: woodpeckerci/plugin-kaniko
     settings:
@@ -38,8 +27,7 @@ steps:
         from_secret: registry-username
       password:
         from_secret: registry-password
-      # replace '/' with '_' in branch name
-      # remove 'feature/' prefix in branch name
-      # tags: ${CI_COMMIT_BRANCH##feature/}
+      # replace invalid characters in branch name
+      tags: ${CI_COMMIT_BRANCH,,/[^a-z0-9._-]/-}
       # auto_tag: true
       # cache: true