How to use PM2 Process Manager with SvelteKit - environment-variables

Question

I am trying to manage my SvelteKit build with PM2 (Process Manager) — my problem is that I can't succesfully inject a .env-file using an ecosystem.config.cjs. My files currently look like this:
.env.production
PORT=3000
The only changing thing in both configs is at:
env: { }
ecosystem.config.cjs (working fine - app runs on provided port)
module.exports = {
apps: [
{
name: 'my_app',
script: './build/index.js',
watch: false,
ignore_watch: ['database'],
autorestart: true,
// --------------------------------------------------
// if passed directly PORT is being used as expected:
// --------------------------------------------------
env: {
PORT: 3000
}
}
]
};
ecosystem.config.cjs (not working - injected PORT variable is being ignored)
module.exports = {
apps: [
{
name: 'my_app',
script: './build/index.js',
watch: false,
ignore_watch: ['database'],
autorestart: true,
// ----------------------------------------------------
// when I try to inject a .env it's just being ignored:
// ----------------------------------------------------
env: {
ENV_PATH: "./.env.production",
}
}
]
};
Any help is much appreciated and thanks for reading!
Cheers,
Boris
EDIT: Made question a bit more clear + added answer below

Answer 1

The problem wasn't the injection of .env.production, but the PORT environment variable. PORT must be provided directly and can't be part of .env.production (well, it can be but will be ignored).
There's probably another way, but the following works:
ecosystem.config.cjs
module.exports = {
apps: [
{
name: 'my_app',
script: './build/index.js',
watch: false,
ignore_watch: ['database'],
autorestart: true,
// ----------------------------------------------------
// when I try to inject a .env it's just being ignored:
// ----------------------------------------------------
env: {
PORT: 3000,
ENV_PATH: "./.env.production",
}
}
]
};
.env.production
# production
PUBLIC_test=value