How to configure gitolite service?

[Marek Paśnikowski]

Dear all.

I am in the process of setting up Gitolite.  My strategy is based on the 
principles of Test Driven Development.

Following the system reconfiguration errors, I have questions regarding the 
minimal required code:

(service gitolite-service-type
  (gitolite-configuration
    (admin-pubkey
      (plain-file "user.pub" "key" "mail"))))

1. Which system user does the .pub file correspond to - git or (in my case) 
marek? In other words, is the key owner the /git/ account which serves the 
Gitolite instance; or is it the remote administrator account which logs into 
the service?

If it is the /git/ user, how do I inject the private key into the server's 
profile?

2. Does the mail address correspond to the same account as above?