Installing Drupal

installing Drupal 8.8.1 on ionos in germany doesn't work

May be you know,At china,we can not visit composer and many other websites.So,we usually make a mirror server for compser by satis.

This time I make a mirror for durpal. It worked,but it did not worked very well.

Many projects can not  be download. And wen I use it on my local, many file links still point to the original url.Some like ftp.drupal.org and packages.drupal.org/8, I set the acrhive config,but satis not cache them.

This is my satis.json,Please help me to fix it:

I volunteered to host a Drupal site for a local non-profit organization.

The existing site was badly enough broken that I decided to start with a clean installation of Drupal 8.8 and transfer the (minimal) content by hand.

In order to keep the broken site up while I was debugging the new installation, I created my new installation under a different URL. So the old site was under the organization's URL (call it "myorg.org") and I built the new installation in a different directory, and linked that directory as a subdirectory of my personal domain ("mydomain.org/myorg-new").

Hi all, I'm a brandy new user to Drupal and to Composer.

Fresh install on my Manjaro Linux desktop using composer.
In a blue box in my terminal, I got this message.
Congratulations, you’ve installed the Drupal codebase
from the drupal/recommended-project template!

I called up http://localhost/drupal/web/
which ended up at http://localhost/drupal/web/core/install.php

While installing drupal 8 in local environment, I did not provide any DB details, so it created default settings.php and automatically created DB also. 

$databases['default']['default'] = array(
  'database' => "db",
  'username' => "db",
  'password' => "db",
  'host' => $host,
  'driver' => "mysql",
  'port' => $port,
  'prefix' => "",
);

I have been reading all the articles about how to use Composer to install 8.8 but I think I'm confused about where I should be running this from.