This buildpack downloads and installs (headless) Google Chrome from your choice of release channels.
You can choose your release channel by specifying GOOGLE_CHROME_CHANNEL as
a config var for your app, in your app.json (for Heroku CI and Review Apps),
or in your pipeline settings (for Heroku CI).
Valid values are stable, beta, and unstable. If unspecified, the stable
channel will be used.
This buildpack installs shims that always add --headless, --disable-gpu,
and --no-sandbox to any google-chrome command as they are required for
Chrome to run on a Heroku dyno.
You'll have two of these shims on your path: google-chrome and
google-chrome-$GOOGLE_CHROME_CHANNEL. They both point to the binary of
the selected channel.
If you are using this buildpack with Selenium and webdriver, you'll need to
tell Selenium where to find the chrome binary. Selenium expects the binary to
live at /usr/bin/google-chrome, but that's a read-only filesystem on Heroku.
You'll have to tell Selenium and/or chromedriver that Chrome is at
/app/.apt/usr/bin/google-chrome instead.
This buildpack will run Chrome with the --headless flag, so you may have
issues where Chrome immediately shuts down after your command. You can use
the --remote-debugging-port flag to keep Chrome running. For example:
$ google-chrome --remote-debugging-port=9222