The standard OS image that we use is CentOS 7 core, which can be found here:
If you choose, you should be able to find a version of this on Amazon's EC2 cloud marketplace. If you use Amazon AWS for your SHRINE node, you will need to use an elastic IP address so that your researchers can find your server.
Once you spin this instance up, create a 'shrine' user. Log in as the root user, create the 'shrine' user and assign a strong password.
After that is done, reboot the server.