Test building arm bindings

.github/workflows/main.yml

@@ -62,17 +62,18 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: true
-      - name: Setup Node.js ${{matrix.node}}
-        uses: actions/setup-node@v1
-        with:
-          node-version: ${{matrix.node}}
 
       - name: Get SWIG pre-built
         uses: actions/download-artifact@v2
         with:
           name: blst_wrap.cpp
           path: prebuild/
 
+      - name: Setup Node.js ${{matrix.node}}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{matrix.node}}
+
       - name: Install && Build TS + bindings
         run: |
           yarn config set ignore-engines true
@@ -91,6 +92,44 @@ jobs:
           path: prebuild/*.node
           if-no-files-found: error
 
+  build-arm:
+    needs: ["build-swig"]
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+
+      - name: Get SWIG pre-built
+        uses: actions/download-artifact@v2
+        with:
+          name: blst_wrap.cpp
+          path: prebuild/
+
+      # https://github.com/docker/setup-qemu-action
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      # https://github.com/docker/setup-buildx-action
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Build test arm binding
+        run: |
+          docker buildx build --platform linux/arm64 -t armbuild:latest --load --progress=plain .
+          docker create --name armbuild armbuild:latest
+          docker cp armbuild:/prebuild .
+
+      - name: Upload binding.node
+        uses: actions/upload-artifact@v2
+        if: github.repository_owner == 'chainsafe' && github.event_name != 'pull_request'
+        with:
+          name: binding.node
+          path: prebuild/*.node
+          if-no-files-found: error
+
   benchmark:
     needs: ["build-swig"]
     runs-on: ubuntu-latest
@@ -121,7 +160,7 @@ jobs:
           node_modules/.bin/ts-node benchmark/multithreadOverhead.ts
 
   publish:
-    needs: ["build-swig", "build"]
+    needs: ["build-swig", "build", "build-arm"]
     if: startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
     steps:

Dockerfile

@@ -0,0 +1,9 @@
+# This is used to build bindings for arm64
+
+FROM node:16
+
+RUN apt install -y python3 g++ make
+# && ln -sf python3 /usr/bin/python
+COPY . .
+
+RUN yarn bootstrap

src/scripts/buildBindings.ts

@@ -38,6 +38,7 @@ export async function buildBindings(binaryPath: string): Promise<void> {
 
   await exec(nodeJsExec, [nodeGypExec, "rebuild"], {
     cwd: BINDINGS_DIR,
+    timeout: 10 * 60 * 1000,
     env: {...process.env, BLST_WRAP_CPP_PREBUILD},
   });