I wouldn’t change anything, I like fixing things as I go. Doing things right the first time is only nice when I know exactly what I’m doing!
That being said, in my current enviroment, I made a mistake when I discovered docker compose. I saw how wonderfully simply it made deployment and helped with version control and decided to dump every single service into one singular docker-compose.yaml. I would separate services next time into at least their relevant categories for ease of making changes later.
Better yet I would automate deployment with Ansible… But that’s my next step in learning and I can fix both mistakes while I go next time!