nifi-registry.sh doesn't find user

[Geoff Craig]

Hello,

I'm trying to run nifi-registry (0.2.0) using run.as in bootstrap.conf and the 
nifi-registry.sh run command is throwing this error:

does not exist. Exiting.

The only reference I see to this is here:

if ! id -u "${run_as_user}" >/dev/null 2>&1; then
                echo "The specified run.as user ${run_as_user} does not exist. 
Exiting."
                exit 1
            fi

I have ran id -u with the run.as username and it comes back with the user id.  
I put in some echo commands and the run_as_user is reporting appropriately.  
Any suggestions?

Thank you,