Cloud Run Storage – Firestore

index.js

// Create a Firebase client
const admin = require('firebase-admin');
admin.initializeApp({
  credential: admin.credential.applicationDefault()
});

const db = admin.firestore();
async function uploadDoc(req, res) {
  // Create a reference to the shoes doc.
  let shoesDoc = db.collection('products').doc('shoes');
  // Add a shoe
  shoesDoc.set({
    name: 'gshoe',
    size: 11.5,
    colors: ['blue', 'red', 'yellow', 'green']
  });
});