Hello.
I am not using DOCKER. Just a pure NODE on my server.
I’m using these lines to build the environment on my CI/CD Tool.
NODE_ENV=production yarn
NODE_ENV=production yarn build
NODE_ENV=production pm2 update ecosystems.config.js
Note. I’m using pm2 as main webserver.
Here is my config folder. I don’t have any ENV rewrite structure(config/env/production/).

I just have one .env file on my server.
On this week I’ll move my project to another server because I still want to use Strapi in my project.