Test x86-linux on Musl

.github/workflows/tests.yml

@@ -447,6 +447,30 @@ jobs:
       - run: apk add bash libstdc++ gcompat
       - run: ./scripts/test-gem-install
 
+  test-precompiled-x86-alpine:
+    needs: "precompile-x86-linux"
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3"]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/download-artifact@v4
+        with:
+          name: cruby-x86-linux-gem
+          path: pkg
+      - name: Enable execution of multi-architecture containers by QEMU
+        run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+      - run: |
+          docker run --rm -v "$(pwd):/re2" -w /re2 \
+            --platform=linux/386 \
+            ruby:${{ matrix.ruby }}-alpine \
+            sh -c "
+              apk add bash libstdc++ gcompat &&
+              ./scripts/test-gem-install
+            "
+
   ruby-memcheck:
     runs-on: "ubuntu-latest"
     env: