Add Gitea Alpine registry workflow

.gitea/workflows/build.yml

@@ -0,0 +1,48 @@
+name: Build Alpine Packages
+
+on:
+  push:
+    branches:
+      - master
+      - main
+    tags:
+      - "*"
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build-and-publish:
+    runs-on: ubuntu-latest
+    container:
+      image: alpine:3.23
+    env:
+      ALPINE_VERSION: "3.23"
+      ALPINE_ARCHES: "x86_64 aarch64"
+      ALPINE_REGISTRY_BRANCH: "v3.23"
+      ALPINE_REGISTRY_REPOSITORY: "${{ vars.PACKAGE_NAME }}"
+      INSTANCE_URL: "${{ vars.INSTANCE_URL }}"
+      PACKAGE_OWNER: "${{ vars.PACKAGE_OWNER }}"
+      PACKAGE_USER: "${{ secrets.PACKAGE_USER }}"
+      PACKAGE_TOKEN: "${{ secrets.PACKAGE_TOKEN }}"
+      PACKAGER: "Joachim Schlöffel <me@joachim-schloeffel.com>"
+    steps:
+      - name: Prepare Environment
+        run: |
+          apk add --no-cache --update abuild-rootbld alpine-sdk atools-apkbuild-lint bash ca-certificates curl doas git nodejs sudo tar
+
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Build packages
+        run: |
+          scripts/apk/clean.sh
+          apkbuild-lint packaging/alpine/local/seaweedfs/APKBUILD
+          scripts/apk/ci-build.sh
+          scripts/apk/list-packages.sh
+
+      - name: Smoke test
+        run: scripts/apk/ci-smoke.sh
+
+      - name: Publish Alpine packages
+        if: github.event_name != 'pull_request'
+        run: scripts/apk/publish-gitea.sh