Build linux-arm64 executable on CI

.github/workflows/ci.yml

@@ -17,6 +17,9 @@ jobs:
         os: [ubuntu-latest]
         ocaml-version: [4.14.1]
         node-version: [16.x]
+    container:
+      image: ocaml/opam:ubuntu-20.04-ocaml-4.14
+      options: --user root
 
     steps:
       - name: Checkout repo
@@ -27,6 +30,9 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
 
+      - name: Install Yarn
+        run: npm install -g yarn
+
       - name: Print Yarn cache
         id: print-yarn-cache
         run: echo "yarn-cache=$(yarn cache dir)" >> $GITHUB_OUTPUT
@@ -42,12 +48,13 @@ jobs:
         run: yarn install
 
       - name: Setup OCaml ${{ matrix.ocaml-version }}
-        uses: ocaml/setup-ocaml@v2
-        with:
-          ocaml-compiler: ${{ matrix.ocaml-version }}
+        # uses: ocaml/setup-ocaml@v2
+        # with:
+        #   ocaml-compiler: ${{ matrix.ocaml-version }}
+        run: opam init -a --disable-sandboxing --compiler=4.14.1
 
       - name: Install Opam deps
-        run: opam install . --deps-only --with-test
+        run: opam install . --deps-only --with-test --yes
 
       - name: Build PPX
         run: opam exec -- dune build
@@ -182,6 +189,73 @@ jobs:
           name: ${{ matrix.container-os }}
           path: _build/default/ppx/bin/bin.exe
 
+  build_linux_arm:
+    name: Build on ${{ matrix.container-os }}
+    runs-on: ${{ matrix.host-os }}
+    if: startsWith(github.ref, 'refs/tags/v')
+    needs:
+      - validate
+    strategy:
+      matrix:
+        host-os: [ubuntu-24.04-arm]
+        container-os: [linux-arm]
+        ocaml-version: [4.14.1]
+        node-version: [16.x]
+    container:
+      image: ocaml/opam:ubuntu-20.04-ocaml-4.14
+      options: --user root
+
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+
+      - name: Install Node 16.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: 16.x
+
+      - name: Install Yarn
+        run: npm install -g yarn
+
+      - name: Print Yarn cache
+        id: print-yarn-cache
+        run: echo "yarn-cache=$(yarn cache dir)" >> $GITHUB_OUTPUT
+
+      - name: Restore Yarn cache
+        id: yarn-cache
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.print-yarn-cache.outputs.yarn-cache }}
+          key: ${{ matrix.container-os }}-yarn-${{ hashFiles('yarn.lock', '*/yarn.lock') }}
+
+      - name: Install Yarn deps
+        run: yarn install
+
+      - name: Setup OCaml ${{ matrix.ocaml-version }}
+        run: opam init -a --disable-sandboxing --compiler=${{ matrix.ocaml-version }}
+
+      - name: Install Opam deps
+        run: opam install . --deps-only --with-test
+
+      - name: Build PPX
+        run: opam exec -- dune build --profile static
+
+      - name: Build ReScript lib
+        run: |
+          cd lib
+          yarn run build
+
+      - name: Build ReScript examples
+        run: |
+          cd examples
+          yarn run build
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.container-os }}
+          path: _build/default/ppx/bin/bin.exe
+
   build_windows:
     name: Build on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
@@ -263,6 +337,7 @@ jobs:
     needs:
       - build_macos
       - build_linux
+      - build_linux_arm
       - build_windows
     name: Release
     runs-on: ubuntu-latest
@@ -290,11 +365,17 @@ jobs:
           name: macos-14
           path: _bin/darwin/arm
 
-      - name: Download Linux artifacts
+      - name: Download Linux x86 artifacts
         uses: actions/download-artifact@v4
         with:
           name: linux-alpine-3
-          path: _bin/linux
+          path: _bin/linux/intel
+
+      - name: Download Linux ARM artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: linux-arm
+          path: _bin/linux/arm
 
       - name: Download Windows artifacts
         uses: actions/download-artifact@v4
@@ -307,7 +388,8 @@ jobs:
           mkdir -p _release/bin
           mv _bin/darwin/intel/bin.exe _release/bin/rescript-logger-ppx-darwin-x64.exe
           mv _bin/darwin/arm/bin.exe _release/bin/rescript-logger-ppx-darwin-arm64.exe
-          mv _bin/linux/bin.exe _release/bin/rescript-logger-ppx-linux-x64.exe
+          mv _bin/linux/intel/bin.exe _release/bin/rescript-logger-ppx-linux-x64.exe
+          mv _bin/linux/arm/bin.exe _release/bin/rescript-logger-ppx-linux-arm64.exe
           mv _bin/windows/bin.exe _release/bin/rescript-logger-ppx-win-x64.exe
           rm -rf _bin