ci: 新增 Gitea Actions 自动编译 linux amd64/arm64

- 每次推送在 debian runner 上交叉编译两个架构的二进制
- 通过 ldflags 注入版本号(分支为 分支名-短SHA,tag 为 tag 名)
- 推送 v* 标签时自动创建 Release 并上传二进制

.gitea/workflows/build.yml

@@ -0,0 +1,56 @@
+name: build
+
+on:
+  push:
+    branches:
+      - "**"
+    tags:
+      - "v*"
+
+jobs:
+  build:
+    runs-on: debian
+    strategy:
+      matrix:
+        include:
+          - goarch: amd64
+            output: docker-compose-backup-linux-amd64
+          - goarch: arm64
+            output: docker-compose-backup-linux-arm64
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.26"
+
+      - name: Build ${{ matrix.output }}
+        env:
+          CGO_ENABLED: "0"
+          GOOS: linux
+          GOARCH: ${{ matrix.goarch }}
+        run: |
+          if [ "${GITHUB_REF_TYPE}" = "tag" ]; then
+            VERSION="${GITHUB_REF_NAME}"
+          else
+            VERSION="${GITHUB_REF_NAME}-${GITHUB_SHA::7}"
+          fi
+          go build -trimpath \
+            -ldflags "-s -w -X git.misaka.ren/M1saka/docker_backup/cmd/backup.Version=${VERSION}" \
+            -o "${{ matrix.output }}" .
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ matrix.output }}
+          path: ${{ matrix.output }}
+
+      - name: Attach to release
+        if: startsWith(github.ref, 'refs/tags/v')
+        uses: akkuman/gitea-release-action@v1
+        with:
+          files: ${{ matrix.output }}
+        env:
+          NODE_OPTIONS: "--experimental-fetch"