Can't Run Multiple Commands Under "Build command" Config?

[pihish]

I have the following in my package.json file:

"scripts": {
    "migrate": "knex migrate:latest"
},

Running npm run migrate works fine on my local machine. When I try to add this command onto my existing build command:

App Runner always gives an error and rolls back my change:

Does App Runner not support multiple build commands?

[andreas-bergstrom]

You should probably use the App Runner repo for this question