### Description
V3 has several breaking changes that need to be addressed
### Testing Notes
**What I did:**
Tested using docusaurus:
```shell
make docs-dev
```
Closes#2575Closes#2543
BREAKING CHANGE: The default listen port for the installer is now
`8080`. We recommend that you put a reverse proxy in front of LibreTime.
### Description
Related to #2543
BREAKING CHANGE: The `--update-nginx` flag was removed from the
installer. The nginx configuration deployed by the installer will now
always be overwritten. Make sure to move your customizations to a
reverse proxy configuration.