prepare script does not read env_variables

Hi all,

I’m not sure this issue is ONTOPIC, I just use some code from your example.

I have some issue to get the process.env from a prepare script in package.json. I’m trying to run mysql migration before starting the app but I can not fetch the process.env variables

My package.json

...
  "scripts": {
     ...
    "prepare": "npm run gcp-build",
    "gcp-build": "node migrations.js",
  },
...

My migrations.js

var path = require('path')
var mysql = require('mysql')
var migration = require('mysql-migrations')

require('dotenv').config()

var connection = mysql.createPool({
  connectionLimit: 10,
  host: process.env.DB_HOST,
  user: process.env.DB_USER,
  password: process.env.DB_PASS,
  database: process.env.DB_NAME
})

migration.init(connection, path.join(__dirname, '/migrations'))

My app read the env_variables from app.yaml without problem but the prepare script do not.

Any help will be appreciated.

[fhinkel]

That’s almost the same reproduction that I used 😄

Glad you found a solution. I opened a bug internally to clarify that in our docs, so other people don’t run in to the same problem. Thanks again for reporting!

[ahmadnassri]

I finally got my full deploy workflow working and gcp-build was failing to run db migration … then I found this issue …

TABLE FLIP!