1. Install NodeJS
2. npm install
3. npm start

Send your request to the server with the port 3000 and add your URL to the "url" query string like this: http://localhost:3000/?url=https://example.org

To show the browser window, set the environment variable PUPPETEER_HEADFUL=1. To use a proxy, set the PUPPETEER_PROXY environment variable, for example PUPPETEER_PROXY=localhost:8080. To specify user data directory, set PUPPETEER_USERDATADIR=/path/to/dir.

Available as a Docker image here: https://quay.io/repository/unixfox/pupflare