ci: release Alpine binaries

.github/workflows/release-linux.yaml

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+# Copyright 2025 Yunze Xu
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Release Linux binaries
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+
+  release-alpine:
+    name: Build binaries on Alpine
+    runs-on: ubuntu-latest
+    timeout-minutes: 300
+
+    strategy:
+      matrix:
+        platform: [amd64, arm64]
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+          submodules: recursive
+
+      - uses: docker/setup-qemu-action@v2
+      - uses: docker/setup-buildx-action@v2
+      - uses: docker/build-push-action@v3
+        with:
+          context: ./docker/alpine
+          load: true
+          tags: build:latest
+          platforms: linux/${{matrix.platform}}
+          build-args: ARCH=${{matrix.platform}}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: build binaries on ${{ matrix.platform }}
+        run: |
+          docker run --rm -v $PWD:/app build /app/docker/alpine/build.sh
+
+      - name: upload
+        uses: actions/upload-artifact@master
+        with:
+          name: snctl-cpp-alpine-${{ matrix.platform }}
+          path: |
+            snctl-cpp
+            sncloud.ini
+            install.sh

docker/alpine/Dockerfile

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+# Copyright 2025 Yunze Xu
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM alpine:3.21
+
+ARG ARCH
+ENV ARCH=${ARCH}
+
+RUN apk update
+# These tools are required by vcpkg and dependencies like openssl
+RUN apk add gcc g++ cmake git curl ninja make zip perl linux-headers bash pkgconfig
+WORKDIR /app

docker/alpine/build.sh

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+#!/bin/ash
+# Copyright 2025 Yunze Xu
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -e
+
+cd /app
+export VCPKG_FORCE_SYSTEM_BINARIES=1
+./vcpkg/bootstrap-vcpkg.sh
+cmake -B build-$ARCH
+cmake --build build-$ARCH
+cp ./build-$ARCH/snctl-cpp .