docs: improve "Hosting with Apache"

[kenjis]

Description

• improve document structure
• fix the project folder location for the configuration

Checklist:

• Securely signed commits
• [] Component(s) with PHPDoc blocks, only if necessary or adds value
• [] Unit testing, with >80% coverage
• User guide updated
• [] Conforms to style guide

[kenjis]

The current doc says to set the document root to /opt/lamp/apache2/htdocs/myproject/public,
and /opt/lamp/apache2/htdocs is the document root of the main server.

This is not good.

<Directory "/opt/lamp/apache2/htdocs">
    Options Indexes FollowSymLinks
    AllowOverride All
    Require all granted
</Directory>

<VirtualHost *:80>
    DocumentRoot "/opt/lamp/apache2/htdocs/myproject/public"
    ServerName myproject.local
    ErrorLog "logs/myproject-error_log"
    CustomLog "logs/myproject-access_log" common
</VirtualHost>

https://codeigniter4.github.io/CodeIgniter4/installation/running.html#virtual-hosting

[kenjis]

Changed the location of the project folder: 3bab114

[MGatner]

While you're here, these should be backslashes.

[kenjis]

Good catch! Fixed.

[MGatner]

I don't think I've used this directive before. Is it necessary? Secure? Advised?

[kenjis]

Yes, it was documented:

If your project folder is not a subfolder of the Apache document root, then your
<VirtualHost> element may need a nested <Directory> element to grant the web server access to the files.

/opt/lamp/apache2/htdocs/myproject/public is in the main document root /opt/lamp/apache2/htdocs.
It is not good. So I moved it.

[MGatner]

Ah I see, it looks like this is a new approach. I trust you on this.

[kenjis]

What do you mean? The change here is simply a change in indentation.