docs(troubleshooting.md): Update Alpine example (#4203)
docs(troubleshooting.md): Update Alpine example (#4203)

* Refresh documentation for building on Alpine.
* Add ttf-freefont@edge dependency
Without ttf-freefont chrome can't render subscript (CO₂)
puppeteer/puppeteer,puppeteer/puppeteer,puppeteer/puppeteer,GoogleChrome/puppeteer,puppeteer/puppeteer,GoogleChrome/puppeteer,GoogleChrome/puppeteer