Problems running the docker compose file

[sarpuser]

I copied the docker-compose file and I am not getting it to work. I am getting a http status 404 from apache.

Separately, I was trying to run the container with a drawio:drawio user. When I used user: "UID:GID" in the docker-copmpose file I got an error saying those IDs did not exist (when in fact they did). I also tried using the PUID & PGID env variables but those didn't seem to affect anything.

Also, there are no volume mappings. Does the webserver dissapear and is recreated every time I restart the container? Where are the diagrams stored?