Trigger Netlify build from a Google Spreadsheet for Gatsby site

script.js

# From your Google Spreadsheet, select the menu item Tools > Script editor. 
# Copy and paste this code.
# Replace uuid with the build_hooks uuid from your Netlify project.
# https://twitter.com/jmolivas/status/1112765435206787072

function onOpen() {
  SpreadsheetApp.getUi()
      .createMenu('Scripts')
      .addItem('Build', 'build')
      .addToUi();
}

function build() {
  UrlFetchApp.fetch('https://api.netlify.com/build_hooks/uuid', {
    'method': 'post',
  })
}

https://www.gatsbyjs.org/packages/gatsby-source-google-spreadsheet/