🐛 Bug Report

When I try to run create-react-app samples, it doesn't work

To Reproduce

cd /tmp
git clone git@github.com:smooth-code/jest-puppeteer.git
cd jest-puppeteer/examples/create-react-app
npm i
npm run test:integration

It outputs

Determining test suites to run...
Jest dev-server output:
npm ERR! code ELIFECYCLE
npm ERR! errno 243
npm ERR! create-react-app-sandbox@0.1.0 test:integration: `jest -c integration/jest.config.js`
npm ERR! Exit status 243
npm ERR! 
npm ERR! Failed at the create-react-app-sandbox@0.1.0 test:integration script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/francois/.npm/_logs/2020-01-31T10_20_40_560Z-debug.log
➜  create-react-app git:(master) ✗ (⎈ microk8s:default) tail ~/.npm/_logs/2020-01-31T10_20_40_560Z-debug.log 
18 verbose argv "/snap/node/2585/bin/node" "/snap/node/2585/bin/npm" "run" "test:integration"
19 verbose node v12.14.1
20 verbose npm  v6.13.4
21 error code ELIFECYCLE
22 error errno 243
23 error create-react-app-sandbox@0.1.0 test:integration: `jest -c integration/jest.config.js`
23 error Exit status 243
24 error Failed at the create-react-app-sandbox@0.1.0 test:integration script.
24 error This is probably not a problem with npm. There is likely additional logging output above.

tail ~/.npm/_logs/2020-01-31T10_20_40_560Z-debug.log                                                                                                                                                            
18 verbose argv "/snap/node/2585/bin/node" "/snap/node/2585/bin/npm" "run" "test:integration"                                                                                                                                                                           
19 verbose node v12.14.1
20 verbose npm  v6.13.4
21 error code ELIFECYCLE
22 error errno 243
23 error create-react-app-sandbox@0.1.0 test:integration: `jest -c integration/jest.config.js`
23 error Exit status 243
24 error Failed at the create-react-app-sandbox@0.1.0 test:integration script.
24 error This is probably not a problem with npm. There is likely additional logging output above.
25 verbose exit [ 243, true ]

Expected behavior

This should run react dev server and display test results

Run npx envinfo --system --binaries --npmPackages expect-puppeteer,jest-dev-server,jest-environment-puppeteer,jest-puppeteer,spawnd --markdown --clipboard

Paste the results here:

npx : 1 installé(s) en 1.074s

*** Clipboard option removed - use clipboardy or clipboard-cli directly ***


## System:
 - OS: Linux 5.3 Ubuntu 19.10 (Eoan Ermine)
 - CPU: (4) x64 Intel(R) Core(TM) i5-2320 CPU @ 3.00GHz
 - Memory: 395.65 MB / 5.79 GB
 - Container: Yes
 - Shell: 5.7.1 - /usr/bin/zsh
## npmPackages:
 - jest-puppeteer: ^4.2.0 => 4.4.0

Workaround

If I comment the server part in jest-puppeterr.config.js and start the react server manually, tests are running