Sorry.
That is not free plugin so VPSSIM can not support auto install wordpress with wp-rocket.
But you can auto install wp with random plugin then using the function
Config Vhost Use Cache Plugin to re-config vhost for it.
VPSSIM menu ==> Wordpress Blog Tools ==> Config Vhost Use Cache Plugin
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VPSSIM - Manage VPS/Server by VPSSIM.COM (4.6.0.0)
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Wordpress Blog Tools
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1) Update Wordpress Safely 9) Backup & Restore Full Website
2) Update Themes & Plugins 10) Setup Wordpress Multisite
3) Enable/Disable Auto Update 11) Config Vhost Use Cache Plugin
4) Enable/Disable WP-Cron.php 12) View Database Info
5) View Themes & Plugins Status 13) Optimize - Repair Database
6) Enable/Disable Redis Cache 14) ON/OFF Protect wp-login.php
7) Backup Database 15) Fix Missed Schedule Error
8) Restore Database 16) Fix Permission Error
Type in your choice (0-Exit):11
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Use this function to config Vhost for cache plugin or Re-Config Vhost
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for website working with new cache plugin when you change to other cache
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plugin( Example: Change from W3 Total Cache to Wp Super Cache)
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How to use: http://go.vpssim.vn/1109
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Type in website: chi2oi.com
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Discovered chi2oi.com using Wordpress code in system
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CHOOSE HOW TO CONGIG VHOST USING PLUGIN CACHE
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1) Redis Cache 3) W3 Total Cache 5) Wp Fastest Cache
2) WP Super Cache 4) Wp-Rocket
Type in your choice (0-Exit):