[CI] Build Nitro CLI musl binary in an Alpine container

.github/workflows/ci.yml

@@ -448,3 +448,43 @@ jobs:
            needs.website-tests.result == 'failure' ||
            needs.website-next-tests.result == 'failure' ||
            needs.verify-nitro-npm-package.result == 'failure')
+
+  # TEMPORARY: verifies the Alpine/musl NativeAOT Nitro CLI build before merging
+  # the release.yml change. Remove this job once confirmed.
+  nitro-musl-build-test:
+    name: 🧪 Test Nitro CLI musl build
+    runs-on: ubuntu-22.04
+    container: alpine:3.21
+    steps:
+      - name: 🐧 Install musl build dependencies
+        shell: sh
+        run: |
+          apk add --no-cache bash clang lld build-base zlib-dev musl-dev \
+            git curl icu-libs libstdc++ libgcc
+
+      - name: 📦 Checkout
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+
+      - name: 🛠 Install .NET
+        uses: actions/setup-dotnet@9a946fdbd5fb07b82b2f5a4466058b876ab72bb2 # v5.3.0
+        with:
+          dotnet-version: 11.0.100-preview.5.26302.115
+
+      - name: 📦 Publish binary (linux-musl-x64)
+        shell: bash
+        run: |
+          dotnet publish src/Nitro/CommandLine/src/CommandLine \
+            -c Release \
+            -r linux-musl-x64 \
+            -f net11.0 \
+            -o publish \
+            --self-contained \
+            -p:PublishAot=true \
+            -p:TargetFrameworks=net11.0 \
+            -p:RuntimeIdentifiers=linux-musl-x64
+
+      - name: ✅ Run the produced binary
+        shell: bash
+        run: |
+          file publish/nitro || true
+          ./publish/nitro --version

.github/workflows/release.yml

@@ -209,6 +209,7 @@ jobs:
   build-nitro-cli:
     name: 🧱 Build and Publish Nitro CLI
     runs-on: ${{ matrix.os }}
+    container: ${{ matrix.container }}
     # We need to depend on `release`, as it publishes the persisted operations of the CLI.
     needs: [compute-release-context, release]
     permissions:
@@ -223,6 +224,7 @@ jobs:
             rid: linux-x64
           - os: ubuntu-22.04
             rid: linux-musl-x64
+            container: alpine:3.21
           - os: ubuntu-24.04-arm
             rid: linux-arm64
           # macOS
@@ -240,6 +242,13 @@ jobs:
           #   rid: win-arm64
 
     steps:
+      - name: 🐧 Install musl build dependencies
+        if: matrix.rid == 'linux-musl-x64'
+        shell: sh
+        run: |
+          apk add --no-cache bash clang lld build-base zlib-dev musl-dev \
+            git curl icu-libs libstdc++ libgcc github-cli
+
       - name: 📦 Checkout
         uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3