Backslashes

src/freedombone

         WEBMAIL_DES_KEY="$(openssl rand -base64 32 | cut -c1-25)"
         echo "\$config['des_key'] = '${WEBMAIL_DES_KEY}';" >> /var/www/webmail/config/config.inc.php
         echo "\$config['product_name'] = '${PROJECT_NAME}';" >> /var/www/webmail/config/config.inc.php
-        echo "$config['plugins'] = array('enigma');" >> /var/www/webmail/config/config.inc.php
-        echo "$config['mime_param_folding'] = 0;" >> /var/www/webmail/config/config.inc.php
+        echo "\$config['plugins'] = array('enigma');" >> /var/www/webmail/config/config.inc.php
+        echo "\$config['mime_param_folding'] = 0;" >> /var/www/webmail/config/config.inc.php
     fi
     
     chown -R www-data:www-data $WEBMAIL_PATH