retain package registries as CI artifacts

.gitea/workflows/build.yml

@@ -5,8 +5,7 @@ on:
     - cron: "17 5 * * 1"
   push:
     branches:
-      - master
+      - "**"
-      - main
     tags:
       - "*"
   pull_request:
@@ -102,6 +101,14 @@ jobs:
           name: greptimedb-musl-binaries-${{ matrix.alpine_registry_branch }}
           path: packages/ci-assets/
 
+      - name: Upload local Alpine registry
+        if: github.event_name != 'schedule' && steps.package-selection.outputs.packages_selected == 'true' && steps.artifact-upload.outputs.available == 'true'
+        uses: actions/upload-artifact@v3
+        with:
+          name: alpine-local-registry-${{ matrix.alpine_registry_branch }}-${{ github.sha }}
+          path: packages/local/
+          retention-days: 30
+
       - name: Smoke test
         if: github.event_name != 'schedule'
         run: scripts/apk/ci-smoke.sh
@@ -128,5 +135,5 @@ jobs:
         run: scripts/apk/runtime-test.sh
 
       - name: Publish Alpine packages
-        if: github.event_name != 'pull_request' && github.event_name != 'schedule' && env.ALPINE_SKIP_BUILD != '1'
+        if: github.event_name != 'schedule' && github.ref == 'refs/heads/main' && env.ALPINE_SKIP_BUILD != '1'
         run: scripts/apk/publish-gitea.sh