Installing Drupal

In D7 there was an entry in settings.php which you needed to change if you moved an entire site (core + site data) to another folder. I want to move a site currently in /dev to /. I've scanned settings.php but cannot find the section where this data resides. Maybe I'm being blind or perhaps it works differently in D10. Can someone point me to the file which I need to edit when moving a site from one folder to another. Thanks.

Edited:

It's .htaccess not settings.php !

.htaccess snippet...

At page https://servername/core/install.php?rewrite=ok&langcode=en-gb&profile=st...

3. Verify requirements.

Database support

Disabled

For testing purposes, I want to install Drupal 8.7.14. However, the instructions provided on the release page, i.e.:

 composer create-project drupal/recommended-project:8.7.14 html

results in this error: "Could not find package drupal/recommended-project with version 8.7.14".

Using this version:

Offline Installation

How to install Drupal and all dependencies offline installation? What are the options for the offline installation? 

What are the URLs/IPs needed to be whitelisted in order to install Drupal and all dependencies within a VM with limited access to the internet?

Is there any way to download the needed dependencies use them in the privet packages repository and configure the Drupal package manager to download from our privet package manager?

I moved successfully a D 10.1.2 version from a subsite location to replace an existing site on the www-location (same webhosting),
However any changes made after the installation to the style.css file have no longer an effect on the site.

Turning on the css and js compression on the performance page results into a white screen so I was forced to start all over again.

I suspect a communication problem with the database; I can run an update.php through the site but a drush updatedb gives a php fatal error.

Now I’m running out of ideas.

I have a problem configuring a new Version D10.1.2 site installed on a shared server "world" at PlanetHoster with composer (2.5.8).

PHP version = 8.2.5

The installation blocks when validating the data: name of the data base, user and paswword.

Here's the message:

Error message

Resolve all issues below to continue the installation. For help configuring your database server, see the installation handbook, or contact your hosting provider.