Docker & web app?

Question

Web development

I have a web application that is built by Webpack to run under Nginx.
There is a Docker container with this web application.
Question: is it possible to specify the API URL through environment variables?
If you use node.js, then there are no questions, but what about when using nginx.

Answer 1

edit nginx configs by script?

sed -i "s/%%%%%%/$API_URL/ig"  "/etc/nginx/nginx.conf"

Answer 2

You can, in the entrypoint script, get from ENV and change the necessary files.