IN LOCAL ENVIRONMENT
1.- In the (root) composer file, replace 'crsi-website' by your website name (that must be formed by words separated by hyphens)
2.- In the folder 'local-packages', rename the folder 'crsi_distribution' by your extension name (that must be formed by words separated by underscores)
3.- Execute the HOWTO steps of in freshly named crsi_distribution folder.
4.- Put the right hostnames in the public/.htaccess

IN PROD ENVIRONMENT
1.- Go in the root folder
2.- Execute 'composer install'
3.- Execute 'chown -Rvf lex:lex public/index.php public/typo3 public/typo3conf' (If the user is not lex, replace it by the real user)
4.- In the 'public' folder, create a file named 'FIRST_INSTALL'
5.- On your web browser, go to /typo3/ and follow the steps to create a fresh TYPO3 instance
6.- Edit the file 'config/system/settings.php' to change the value of 'transport_sendmail_command' to '/usr/sbin/sendmail -t -i'

ADDITIONAL : HTPASSWORD
1. Go to public directory : cd public
1.- Create the htpassword file : htpasswd -c .htpasswd philippe
2.- Give the right permissions : chmod 644 .htpasswd
3.- Add another user : htpasswd .htpasswd junior
4.- Edit the htaccess file
        #Protect Directory
        AuthName "Dialog prompt"
        AuthType Basic
        AuthUserFile /home/{cpanel-user}/public_html/public/.htpasswd
        Require valid-user