| 🚨 I found an awesome library to solve this problem. envsub can substitute env variables in file to values. If you are having the same problem, try using that library instead of this script.

Add env to Google App Engine config file

What is it?

• It's a shell script to add environment variables to Google App Engine config file (app.xml)
• It add environment variables to app.xml at deployment stage.

Why did you made it?

• Google App Engine config file have been exposing environment variables in the form of plain text.
• I wanted it to me more secure.

When can I use the script?

• When you deploy your code to Google App Engine via CD(Continuous Delivery) tool (e.g. Github Actions, Bitbucket pipelines, Circle CI, Etc.)

How do I use it?

• Add name of environment variables that you want to add to .env.array in app.xml
• Add key/value of environment variable in your CD tool settings.
• Add commands to run this script to your CD tool config file.

Warning

• It is expected to run correctly only when app.xml doesn't have env_variables field.
• You have to migrate all the environment variables from app.xml to CD tool settings.

Example

• Bitbucket pipelines