ci: switching to qemu emulation

.github/workflows/ci.yml

@@ -118,36 +118,27 @@ jobs:
 
   build-arm64:
     needs: [build_stencils]
-    runs-on: ubuntu-22.04-arm64
-
-    strategy:
-      matrix:
-        python-version: ["3.10"]
-
+    runs-on: ubuntu-latest
     steps:
-    - name: Check out code
-      uses: actions/checkout@v4
-
+    - uses: actions/checkout@v4
     - uses: actions/download-artifact@v4
       with:
         name: stencil-object-files
         path: src/copapy/obj
-
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+    - name: Set up QEMU for ARM64
+      uses: docker/setup-qemu-action@v3
       with:
-        python-version: ${{ matrix.python-version }}
-
-    - name: Install Python dependencies
-      run: python -m pip install -e .[dev]
-
-    - name: Compile coparun
+        platforms: linux/arm64
+    - name: Use ARM64 container
       run: |
-        mkdir -p bin
-        gcc -O3 -DENABLE_BASIC_LOGGING -o bin/coparun src/coparun/runmem.c src/coparun/coparun.c src/coparun/mem_man.c
-
-    - name: Run tests with pytest
-      run: pytest
+        docker run --rm -v $PWD:/app -w /app --platform linux/arm64 ubuntu:22.04 \
+        bash -lc "apt-get update && \
+                  apt-get install -y build-essential python3 python3-pip python3-dev && \
+                  python3 -m pip install --upgrade pip setuptools wheel && \
+                  python3 -m pip install .[dev] && \
+                  mkdir -p bin && \
+                  gcc -O3 -DENABLE_BASIC_LOGGING -o bin/coparun src/coparun/runmem.c src/coparun/coparun.c src/coparun/mem_man.c && \
+                  python3 -m pytest"
 
   build-windows:
     needs: [build_stencils]