Some config file from digitalocean sever.

/var/www/
        ├── ftp
        │   ├── _h5ai
        │   └── files...
        ├── html
        │   ├── about
        │   ├── posts
        │   └── ...
        └── webdav
            ├── phpsite
            └── testfolder

root@ubuntu-s-1vcpu-1gb-sfo2-01:/etc/apache2# l sites-enabled/
000-default.conf -> ../sites-available/000-default.conf
dav.hinataa.tk.conf -> ../sites-available/dav.hinataa.tk.conf
h5ai.hinataa.tk -> /etc/apache2/sites-available/h5ai.hinataa.tk.conf
h5ai.hinataa.tk.conf -> ../sites-available/h5ai.hinataa.tk.conf
php.hinataa.tk.conf -> ../sites-available/php.hinataa.tk.conf

Some files from /etc/apache2/sites-available

• 000-default.conf

  <VirtualHost *:80>
          # The ServerName directive sets the request scheme, hostname and port that
          # the server uses to identify itself. This is used when creating
          # redirection URLs. In the context of virtual hosts, the ServerName
          # specifies what hostname must appear in the request's Host: header to
          # match this virtual host. For the default virtual host (this file) this
          # value is not decisive as it is used as a last resort host regardless.
          # However, you must set it for any further virtual host explicitly.
          #ServerName www.example.com
          ServerName hinataa.tk
          ServerAdmin webmaster@localhost
          DocumentRoot /var/www/html
  
          # Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
          # error, crit, alert, emerg.
          # It is also possible to configure the loglevel for particular
          # modules, e.g.
          #LogLevel info ssl:warn
  
          ErrorLog ${APACHE_LOG_DIR}/error.log
          CustomLog ${APACHE_LOG_DIR}/access.log combined
          ErrorDocument 404 /static/404.html
          # For most configuration files from conf-available/, which are
          # enabled or disabled at a global level, it is possible to
          # include a line for only one particular virtual host. For example the
          # following line enables the CGI configuration for this host only
          # after it has been globally disabled with "a2disconf".
          #Include conf-available/serve-cgi-bin.conf
  </VirtualHost>

• h5ai.hinataa.tk.conf

  <VirtualHost *:80>
          ServerName h5ai.hinataa.tk
          ServerAdmin webmaster@localhost
          DocumentRoot /var/www/ftp
  
          #ErrorLog ${APACHE_LOG_DIR}/error.log
          #CustomLog ${APACHE_LOG_DIR}/access.log combined
          DirectoryIndex  index.html  index.php  /_h5ai/public/index.php
          <Directory "/var/www/ftp">
              AllowOverride all
              Order allow,deny
              Allow from all
          </Directory>
  </VirtualHost>

• dav.hinataa.tk.conf

  DavLockDB /var/www/DavLock
  <VirtualHost *:80>
          ServerName dav.hinataa.tk
          ServerAdmin webmaster@localhost
          DocumentRoot /var/www/webdav/
          <Directory "/var/www/webdav/">
              DAV ON
              AuthType Digest 
      AuthName "webdav" 
              AuthUserFile /etc/apache2/webdav.passwords 
              Require valid-user
          </Directory>
  </VirtualHost>