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# create a new user (john for this example)
# just enter a password when asked, confirm it, and the other steps are optionals
sudo adduser john

# give root user the ownership of john's home directory
sudo chown root:root /home/john

# edit the ssh configuration file
sudo vim /etc/ssh/sshd_config

# restart ssh
sudo service ssh restart

# add these lines
Match user john
  # Change the root of john user to his home directory
  ChrootDirectory /home/john
  AllowTcpForwarding no
  ForceCommand internal-sftp

# create a public web folder for john
sudo mkdir /home/john/public_html

# give john the ownership of this folder
sudo chown -R john:john /home/john/public_html

# edit the apache configuration file
sudo vim /etc/apache2/apache2.conf

# add these lines to allow the webserver to access
# john public web directory
<Directory /home/john/public_html/>
  Options Indexes FollowSymLinks
  AllowOverride None
  Require all granted
</Directory>

# create a virtual host for john's website
sudo vim /etc/apache2/sites-available/johnwebsite.tld.conf

# add these lines to this file
<VirtualHost *:80>
  ServerAdmin your@email.tld
  ServerName johnwebsite.tld
  ServerAlias www.johnwebsite.tld
  DocumentRoot /home/john/public_html/johnwebsite.tld

  ErrorLog ${APACHE_LOG_DIR}/error.log
  CustomLog ${APACHE_LOG_DIR}/access.log combined

  <Directory /home/john/public_html/johnwebsite.tld>
    Options -Indexes
    AllowOverride All
  </Directory>
</VirtualHost>

# activate the new virtual host
sudo a2ensite johnwebsite.tld.conf

# rerstart the webserver to validate the changes
sudo service apache2 restart

# create the folder for johnwebsite.tld website
sudo mkdir /home/john/public_html/johnwebsite.tld

# give john ownership of this folder
sudo chown -R john:john /home/john/public_html/johnwebsite.tld