ci: Add integration test

.github/workflows/integration.yml

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+name: Integration
+
+on:
+  push:
+    paths-ignore:
+      - 'docs/**'
+      - 'README.md'
+      - 'LICENSE'
+      - '.editorconfig'
+    branches:
+      - main
+  pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - 'README.md'
+      - 'LICENSE'
+      - '.editorconfig'
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  smoke:
+    runs-on: ubuntu-x64-small
+    strategy:
+      fail-fast: false
+      matrix:
+        node: [20, 22, 24, 25]
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: 'false'
+
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          repository: grafana/pyroscope-sdk-smoke-action
+          path: .github/actions/pyroscope-sdk-smoke-action
+          persist-credentials: 'false'
+
+      - name: Set node version in Dockerfile
+        run: sed -i 's/^ARG NODE_VERSION=.*/ARG NODE_VERSION=${{ matrix.node }}/' smoke/Dockerfile
+
+      - uses: ./.github/actions/pyroscope-sdk-smoke-action
+        with:
+          dockerfile: smoke/Dockerfile
+          service-name: smoke
+          search-term: smokeWork
+          profile-type: process_cpu:wall:nanoseconds:wall:nanoseconds
+          timeout-seconds: '90'

smoke/Dockerfile

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+ARG NODE_VERSION=lts
+FROM node:${NODE_VERSION}-alpine
+
+RUN apk add --no-cache python3 make g++
+
+WORKDIR /sdk
+
+COPY package.json yarn.lock .yarnrc.yml ./
+RUN corepack enable && yarn install --immutable
+
+COPY tsconfig.json ./
+COPY config/ ./config/
+COPY src/ ./src/
+COPY tools/ ./tools/
+RUN yarn build && yarn pack --out /tmp/pyroscope-nodejs.tgz
+
+WORKDIR /app
+RUN npm init -y && npm install /tmp/pyroscope-nodejs.tgz
+
+COPY smoke/app.mjs ./
+
+CMD ["node", "app.mjs"]

smoke/app.mjs

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+import { init, start } from '@pyroscope/nodejs';
+
+function smokeWork(n) {
+  const primes = [];
+  let candidate = 2;
+  while (primes.length < n) {
+    const isPrime = !primes.some((p) => candidate % p === 0);
+    if (isPrime) primes.push(candidate);
+    candidate++;
+  }
+  return primes;
+}
+
+const N = 10_000_000;
+
+init({
+  serverAddress: process.env.PYROSCOPE_SERVER_ADDRESS,
+  appName: 'smoke',
+  flushIntervalMs: 5000,
+  wall: {
+    samplingDurationMs: 5000,
+  },
+});
+start();
+
+smokeWork(N);