According to the instructions Ways to set environment variables with Compose | Docker Docs I set up a custom variable file at my place

In my case, this file is not detected. It should be assumed that I do not want to use:

It works in the same way as docker run --env-file=FILE ... . Why can’t it see my web-variables.env file?

@bluenobly is right. If you need even more details, I found three topics where I explained the different ways to pass variables (compose --env-file , .env file, env_file in compose files)