chore: promote on tag

Author: Bennett Goble

.github/workflows/ci.yaml

@@ -3,8 +3,9 @@ name: Test & Build
 on:
   push:
     branches: main
+  tags:
+    - 'v*'
   pull_request:
-    branches: main
 
 jobs:
   test:
@@ -20,8 +21,8 @@ jobs:
       image: platform/nginx-proxy 
       platforms: linux/amd64,linux/arm64 
       tags: latest
-      push: ${{ github.event_name != 'pull_request' }}
-      promote: ${{ github.event_name != 'pull_request' }}
+      push: ${{ startsWith(github.ref, 'refs/tags/v') }}
+      promote: ${{ startsWith(github.ref, 'refs/tags/v') }}
     secrets:
       github_pat: ${{ secrets.SHARED_GITHUB_TOKEN }}
       jfrog_token: ${{ secrets.SHARED_JFROG_TOKEN }}