Lighthouse analyzes web apps and web pages, collecting modern performance metrics and insights on developer best practices.

This image is greatly inspired from Justin RIBEIRO's work

docker run --rm --name lighthouse -it -v /path/to/your/report:/home/chrome/reports femtopixel/google-lighthouse <your_site_url> <optional_args>

With <you_site_url> url to your site (e.g. http://www.google.com). You can pass args AFTER the url if you want to.

For example, you can export as json with this command:

docker run --rm --name lighthouse -it -v /path/to/your/report:/home/chrome/reports femtopixel/google-lighthouse http://www.google.com --output json

You can specify CHROME_FLAGS environment variable (-e parameter in your docker command) to be used in chrome-flags parameter. (default: --headless --disable-gpu --no-sandbox)

Further reading on Google Lighthouse

• Error while writing files

Runtime error encountered: { Error: EACCES: permission denied, open '/home/chrome/reports/myawesome_site_admin_heavypage.report.json'
errno: -13,
code: 'EACCES',
syscall: 'open',
path: '/home/chrome/reports/myawesome_site_admin_heavypage.report.json' }

Make sure your folder has the write right for others (chmod o w)

If the issue still occurs, you may want to add --disable-shm-dev-usage Chrome flag (cf. https://stackoverflow.com/questions/69173469/meaning-of-selenium-chromeoptions/69175552#69175552 and https://issues.chromium.org/issues/40517415; thx @kevinbreit - #25)

You can add this flag with the -e flag in your docker command docker run --rm --name lighthouse -it -e CHROME_FLAGS="--headless --disable-gpu --no-sandbox --ignore-certificate-errors --disable-dev-shm-usage --allow-insecure-localhost --silent" -v /path/to/your/report:/home/chrome/reports femtopixel/google-lighthouse http://www.google.com --output json