Folders and files still owned by root even with PUID and PGID specified

Running changedetection via docker-compose, specifying PUID and PGID, but the folders and files it creates are still owned by root. Tried just UID and GID as well, not sure what the issue might be.

```
version: "3.9"

services:
app:
container_name: changedetection.io
image: dgtlmoon/changedetection.io:latest
restart: "always"
ports:
- "5000:5000"
volumes:
- "/volume1/docker/changedetection/datastore:/datastore"
network_mode: "bridge"
labels:
- "com.centurylinklabs.watchtower.enable=true"
- "com.centurylinklabs.watchtower.monitor-only=true"
environment:
- PUID=1030
- PGID=100
healthcheck:
test: apt-get update -y > /dev/null && apt-get install -y curl > /dev/null && curl --fail -S http://www.google.com/ > /dev/null || exit 1
interval: 30s
timeout: 10s
retries: 3
start_period: 15s
```

Start by reproducing the issue with the provided docker-compose configuration and inspect how the container handles the PUID and PGID environment variables and the mounted /datastore path. Done means files and folders created in the mounted datastore are owned by the configured user and group.

Written by the indexing model from the issue text.