After ordering a servelet with Ubuntu 12.04.3 (64-bit) + Dokku OS template, proceed to configure a domain name to point to your servelet's IP address. If you have a domain name hosted under our DNS hosting service, you can proceed to create an A record to point to your servelet's IP address.
Login to your servelet using SSH, and then use your favourite text editor (e.g. vi, nano) to create a text file called:
/home/dokku/VHOST
which contains the full qualified domain name (FQDN) that you have just set. Alternatively, you can type this command on the shell:
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echo "[DOMAIN NAME]" > /home/dokku/VHOST
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This will create the /home/dokku/VHOST file containing "[DOMAIN NAME]", please replace [DOMAIN NAME] with the fully qualified domain name that you are using.
More information on how to configure your servelet for Dokku can be found on Dokku's website.