How to make my first docker-compose.yml and .env files

I'm trying to use docker-compose to setup this: https://github.com/serg-markovich/local-whisper-obsidian

How does one go about learning how to make these files ? Is there a source where I can learn ?

For people who know how to make these files ... is there a list of UNRAID details they need to know ?

All help appreciated.

here is a plex docker-compose.yml

services:
plex:
image: lscr.io/linuxserver/plex:latest
container_name: plex
network_mode: bridge
restart: unless-stopped
environment:
# Use a dedicated .env file for sensitive variables for better security and management
- PUID=99 # Unraid default
- PGID=100 # Unraid default
- TZ=America/Toronto # Example timezone
- VERSION=docker
volumes:
# Map the configuration path to the Unraid appdata share
- /mnt/user/appdata/plex:/config
# Map media shares
- /mnt/user/media/tvshows:/tvshows:ro # read-only access
- /mnt/user/media/movies:/movies:ro
ports:
- 32400:32400/tcp

Edited March 4Mar 4 by digitaldoctor