ci: add a GitHub workflow to test builds on Alpine

.cirrus.yml

@@ -50,7 +50,6 @@ build_packages_task:
     cat >>Dockerfile <<EOF
     FROM centos:7
     RUN ${cmd}
-    RUN yum install -y file
 
     RUN mkdir /devel-env
     WORKDIR /devel-env

.github/workflows/build_packages.yml

@@ -0,0 +1,35 @@
+name: Build Packages on Alpine
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout ${{ github.ref }}
+        uses: actions/checkout@v4
+
+      - name: Build
+        run: |
+          devel/downloads/download_packages.sh
+
+          curl -L "$(curl -L https://api.github.com/repos/adonis0147/devel-env/releases/latest |
+            sed -n 's|[[:space:]]*"browser_download_url": "\(.*\)\"|\1|p' |
+            grep "$(uname -m | sed 's/arm64/aarch64/')")" -o devel/scripts/install_toolchain.sh
+          chmod a+x devel/scripts/install_toolchain.sh
+
+          cat >>Dockerfile <<EOF
+          FROM alpine:latest
+
+          RUN apk add bash libc6-compat
+
+          RUN mkdir /devel-env
+          WORKDIR /devel-env
+          EOF
+
+          docker build -t packages .
+          docker run --rm --mount=type=bind,source="$(pwd)",target=/devel-env packages \
+            bash -c 'cd devel/scripts; bash install.sh'