chore(NODE-6176): add prebuilds in CI

.github/docker/Dockerfile.glibc

@@ -0,0 +1,12 @@
+ARG NODE_BUILD_IMAGE=node:16.20.1-bullseye
+FROM $NODE_BUILD_IMAGE AS build
+
+WORKDIR /mongodb-client-encryption
+COPY . .
+
+RUN node ./.github/scripts/libmongocrypt.mjs
+RUN mkdir -p /out && cp -R /mongodb-client-encryption/prebuilds/ /out
+
+FROM scratch
+
+COPY --from=build /out /

.github/scripts/build_linux.mjs

@@ -0,0 +1,54 @@
+import child_process from 'node:child_process';
+import events from 'node:events';
+import fs from 'node:fs/promises';
+import path from 'node:path';
+import url from 'node:url';
+
+const __dirname = path.dirname(url.fileURLToPath(import.meta.url));
+
+/** Resolves to the root of this repository */
+function resolveRoot(...paths) {
+  return path.resolve(__dirname, '..', '..', ...paths);
+}
+
+/** `xtrace` style command runner, uses spawn so that stdio is inherited */
+async function run(command, args = [], options = {}) {
+    const commandDetails = `+ ${command} ${args.join(' ')}${options.cwd ? ` (in: ${options.cwd})` : ''}`
+  console.error(commandDetails);
+  const proc = child_process.spawn(command, args, {
+    stdio: 'inherit',
+    cwd: resolveRoot('.'),
+    ...options
+  });
+  await events.once(proc, 'exit');
+
+  if (proc.exitCode != 0) throw new Error(`CRASH(${proc.exitCode}): ${commandDetails}`);
+}
+
+async function main() {
+  await fs.rm(resolveRoot('build'), { recursive: true, force: true });
+  await fs.rm(resolveRoot('prebuilds'), { recursive: true, force: true });
+
+  try {
+    // Locally you probably already have this
+    await run('docker', ['buildx', 'use', 'builder']);
+  } catch {
+    // But if not, create one
+    await run('docker', ['buildx', 'create', '--name', 'builder', '--bootstrap', '--use']);
+  }
+
+  await run('docker', [
+    'buildx',
+    'build',
+    // '--progress=plain', // By default buildx detects tty and does some fancy collapsing, set progress=plain for debugging
+    '--platform',
+    'linux/s390x,linux/arm64,linux/amd64',
+    '--output',
+    'type=local,dest=.,platform-split=false',
+    '-f',
+    resolveRoot('./.github/docker/Dockerfile.glibc'),
+    resolveRoot('.')
+  ]);
+}
+
+await main();

.github/workflows/build.yml

@@ -8,23 +8,46 @@ on:
 name: build
 
 jobs:
-  build:
-    runs-on: ubuntu-latest
+  builds:
+    outputs:
+      artifact_id: ${{ steps.upload.outputs.artifact-id }}
     strategy:
-        matrix:
-          node: ['20.x'] # '16.x', '18.x',
-    name: Node.js ${{ matrix.node }} build
+      matrix:
+        os: [ubuntu-latest, windows-2019, macos-11, macos-latest]
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions/setup-node@v4
+      - if: ${{ runner.os == 'Linux' }}
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - if: ${{ runner.os == 'Linux' }}
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - if: ${{ runner.os == 'Linux' }}
+        name: Build ${{ runner.os }} Prebuild
+        run: node .github/scripts/build_linux.mjs
+
+      - if: ${{ runner.os != 'Linux' }}
+        name: Setup nodejs
+        uses: actions/setup-node@v3
         with:
-          node-version: ${{ matrix.node }}
+          node-version: 'lts/*'
           cache: 'npm'
           registry-url: 'https://registry.npmjs.org'
 
-      - run: npm install -g npm@latest
+      - if: ${{ runner.os != 'Linux' }}
+        name: Build ${{ runner.os }} Prebuild
+        run: node .github/scripts/libmongocrypt.mjs
         shell: bash
 
-      - run: node .github/scripts/libmongocrypt.mjs
-        shell: bash
+      - id: upload
+        name: Upload prebuild
+        uses: actions/upload-artifact@v4
+        with:
+          name: build-${{ matrix.os }}
+          path: prebuilds/
+          if-no-files-found: 'error'
+          retention-days: 1