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# Docker Puppeteer
A base image for running Puppeteer scripts. Add your own tools (such as Jest, Mocha, etc), link services you want to test via Docker Compose, and run your Puppeteer scripts with a headless Chromium.
## Usage example
Dockerfile.integration-tests:
```Dockerfile
FROM buildkite/puppeteer
RUN npm i mocha@5
ENV PATH="${PATH}:/node_modules/.bin"
```
docker-compose.integration-tests.yml:
```yml
version: '3'
services:
tests:
build:
context: .
dockerfile: Dockerfile.integration-tests
volumes:
- "./integration-tests:/integration-tests"
- "/screenshots"
command: mocha --recursive /integration-tests
links:
- app
app:
image: tutum/hello-world
expose:
- "80"
```
integration-tests/index.test.js:
```js
const assert = require('assert')
const puppeteer = require('puppeteer')
let browser
let page
before(async() => {
browser = await puppeteer.launch({
args: [
// Required for Docker version of Puppeteer
'--no-sandbox',
'--disable-setuid-sandbox',
// This will write shared memory files into /tmp instead of /dev/shm,
// because Docker’s default for /dev/shm is 64MB
'--disable-dev-shm-usage'
]
})
const browserVersion = await browser.version()
console.log(`Started ${browserVersion}`)
})
beforeEach(async() => {
page = await browser.newPage()
})
afterEach(async() => {
await page.close()
})
after(async() => {
await browser.close()
})
describe('App', () => {
it('renders', async() => {
const response = await page.goto('http://app/')
assert(response.ok())
await page.screenshot({ path: `/screenshots/app.png` })
})
})
```
Running:
```
docker-compose -f integration-tests run tests
```
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