Full clear MODx autoinstaller last nightlies version from official GitHub repo (https://github.com/modxcms/revolution) with create user, database, nginx's virtual host.

night_install.sh

#!/bin/bash

##############

echo "Welcome to MODx autoinstaller.
------------------------------------
Enter MySQL root password"
read ROOTPASS

echo "Enter username for site and database"
read USERNAME

echo "Enter domain"
read DOMAIN

##############

TIMEZONE='Europe/Moscow'

MYSQLPASS=`< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c12`
SFTPPASS=`< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c12`
PASSWORD=`< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c12`

##############

echo "Creating user and home directory…"
useradd $USERNAME -m -G sftp,mail -s "/bin/false" -d "/var/www/$USERNAME"
if [ "$?" -ne 0 ]; then
	echo "Can't add user"
	exit 1
fi
echo $SFTPPASS > ./tmp
echo $SFTPPASS >> ./tmp
cat ./tmp | passwd $USERNAME
rm ./tmp

##############

mkdir /var/www/$USERNAME/www
mkdir /var/www/$USERNAME/tmp
chmod -R 755 /var/www/$USERNAME/
chown -R $USERNAME:$USERNAME /var/www/$USERNAME/
chown root:root /var/www/$USERNAME

echo "Creating vhost file"
echo "upstream backend-$USERNAME {server unix:/var/run/php5-$USERNAME.sock;}

server {
	listen				80;
	server_name			$DOMAIN www.$DOMAIN;
	root				/var/www/$USERNAME/www;
	access_log			/var/log/nginx/$USERNAME-access.log;
	error_log			/var/log/nginx/$USERNAME-error.log;
	index				index.php index.html;
	rewrite_log			on;
	if (\$host != '$DOMAIN' ) {
		rewrite			^/(.*)$  http://$DOMAIN/\$1  permanent;
	}
	location ~* ^/core/ {
		deny			all;
	}
	location /assets {
		expires          1y;
		add_header       Cache-Control public,max-age=31536000;
		gzip             on;
		gzip_min_length  1000;
		gzip_comp_level  4;
		gzip_static      on;
		gzip_proxied     expired no-cache no-store private auth;
		gzip_types       text/plain text/css application/x-javascript;
		gzip_vary        on;
		gzip_disable     \"msie6\";
		access_log       off;
	}
	location / {
		try_files		\$uri \$uri/ @rewrite;
	}
	location /index.html {
		rewrite			/ / permanent;
	}

	location ~ ^/(.*?)/index\.html$ {
		rewrite			^/(.*?)/ /$1/ permanent;
	}
	location @rewrite {
		rewrite			^/(.*)$ /index.php?q=\$1;
	}
	location ~ \.php$ {
		include			fastcgi_params;
		fastcgi_param	SCRIPT_FILENAME \$document_root\$fastcgi_script_name;
		fastcgi_pass	backend-$USERNAME;
	}
	location ~* ^.+\.(jpg|jpeg|gif|css|png|js|ico|bmp)$ {
	   access_log		off;
	   expires			10d;
	   break;
	}
	location ~ /\.ht {
		deny			all;
	}
}" > /etc/nginx/sites-available/$USERNAME.conf
ln -s /etc/nginx/sites-available/$USERNAME.conf /etc/nginx/sites-enabled/$USERNAME.conf

##############

echo "Creating php5-fpm config"

echo "[$USERNAME]
listen = /var/run/php5-$USERNAME.sock
listen.mode = 0666
user = $USERNAME
group = $USERNAME
chdir = /var/www/$USERNAME
php_admin_value[upload_tmp_dir] = /var/www/$USERNAME/tmp
php_admin_value[soap.wsdl_cache_dir] = /var/www/$USERNAME/tmp
php_admin_value[memory_limit] = 128M
php_admin_value[upload_max_filesize] = 100M
php_admin_value[post_max_size] = 100M
php_admin_value[open_basedir] = /var/www/$USERNAME/
php_admin_value[disable_functions] = exec,passthru,shell_exec,system,proc_open,popen,curl_multi_exec,parse_ini_file,show_source,stream_socket_client,stream_set_write_buffer,stream_socket_sendto,highlight_file,com_load_typelib
php_admin_value[cgi.fix_pathinfo] = 0
php_admin_value[date.timezone] = $TIMEZONE
php_admin_value[session.gc_probability] = 1
php_admin_value[session.gc_divisor] = 100
pm = dynamic
pm.max_children = 10
pm.start_servers = 2
pm.min_spare_servers = 2
pm.max_spare_servers = 4
" > /etc/php5/fpm/pool.d/$USERNAME.conf

##############

echo "Reloading nginx"
service nginx reload
echo "Reloading php5-fpm"
service php5-fpm reload

##############

echo "Creating database"

Q1="CREATE DATABASE IF NOT EXISTS $USERNAME DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci;;"
Q2="GRANT ALTER,DELETE,DROP,CREATE,INDEX,INSERT,SELECT,UPDATE,CREATE TEMPORARY TABLES,LOCK TABLES ON $USERNAME.* TO '$USERNAME'@'localhost' IDENTIFIED BY '$MYSQLPASS';"
Q3="FLUSH PRIVILEGES;"
SQL="${Q1}${Q2}${Q3}"

mysql -uroot --password=$ROOTPASS -e "$SQL"

##############

echo "Installing MODx"

cd /var/www/$USERNAME/www/

echo "Getting nightlies version from git…"
git clone -b develop https://github.com/modxcms/revolution.git ./

echo "Create package…"

# Generate build.config.php
echo "<?php
	define('MODX_CORE_PATH', dirname(dirname(__FILE__)) . '/core/');
	define('MODX_CONFIG_KEY', 'config');
	define('XPDO_DSN', 'mysql:host=localhost;dbname=$USERNAME;charset=utf8');
	define('XPDO_DB_USER', '$USERNAME');
	define('XPDO_DB_PASS', '$MYSQLPASS');
	define('XPDO_TABLE_PREFIX', 'modx_');
" > ./_build/build.config.php

cp ./_build/build.sample.properties ./_build/build.properties.php

# Generate config.xml
echo "Creating config.xml"
echo "<modx>
	<database_type>mysql</database_type>
	<database_server>localhost</database_server>
	<database>$USERNAME</database>
	<database_user>$USERNAME</database_user>
	<database_password>$MYSQLPASS</database_password>
	<database_connection_charset>utf8</database_connection_charset>
	<database_charset>utf8</database_charset>
	<database_collation>utf8_unicode_ci</database_collation>
	<table_prefix>modx_</table_prefix>
	<inplace>1</inplace>
	<unpacked>1</unpacked>
	<language>ru</language>
	<cmsadmin>$USERNAME</cmsadmin>
	<cmspassword>$PASSWORD</cmspassword>
	<cmsadminemail>admin@$DOMAIN</cmsadminemail>
	<remove_setup_directory>1</remove_setup_directory>
	<context_mgr_path>/var/www/$USERNAME/www/manager/</context_mgr_path>
	<context_mgr_url>/manager/</context_mgr_url>
	<context_connectors_path>/var/www/$USERNAME/www/connectors/</context_connectors_path>
	<context_connectors_url>/connectors/</context_connectors_url>
	<context_web_path>/var/www/$USERNAME/www/</context_web_path>
	<context_web_url>/</context_web_url>
	<assets_path>/var/www/$USERNAME/www/assets/</assets_path>
	<assets_url>/assets/</assets_url>
	<core_path>/var/www/$USERNAME/www/core/</core_path>
	<processors_path>/var/www/$USERNAME/www/core/model/modx/processors/</processors_path>
	<https_port>443</https_port>
	<http_host>$DOMAIN</http_host>
	<cache_disabled>0</cache_disabled>
</modx>
" > /var/www/$USERNAME/config.xml

echo "Build package…"
php ./_build/transport.core.php

cd setup
echo "Running setup..."
php ./index.php --installmode=new --config=/var/www/$USERNAME/config.xml

#############

echo "Set permissions for /var/www/$USERNAME/www…
CHOWN files…"
chown -R $USERNAME:$USERNAME /var/www/$USERNAME/www
echo "CHMOD 755 for directories…"
find /var/www/$USERNAME/www -type d -exec chmod 0755 {} +
echo "CHMOD 644 for files..."
find /var/www/$USERNAME/www -type f -exec chmod 0644 {} +

echo "Done. Please visit http://$DOMAIN/manager/ to login.
Manager user: $USERNAME
Manager password: $PASSWORD
SFTP password: $SFTPPASS
Mysql password: $MYSQLPASS" > /var/www/$USERNAME/pass.txt

cat /var/www/$USERNAME/pass.txt