published docker hub image rhqproject/rhq-nodb does not work

[tarilabs]

The published docker image rhqproject/rhq-nodb on the docker hub does not work and hangs forever once started.

I believe this is because the run script file invoke the installer rhqctl install, the installer does not find in the server properties a default admin password, hence prompts the user with:

The [rhq.autoinstall.server.admin.password] property is required but not set in [rhq-server.properties].
Do you want to set [rhq.autoinstall.server.admin.password] value now?

(I've checked by running this manually myself); but the installer is running as a java process inside the container itself, hence there is no way this is going to ever move on or start the application itself.

I've solved by proving a default rhq.autoinstall.server.admin.password property for the user rhqadmin as rhqadmin:

$ ./rhq-encode-value.sh 
Property rhq.autoinstall.server.admin.password [y/n]: y
Password: rhqadmin

Encoded password for rhq-server.properties:
     rhq.autoinstall.server.admin.password=x1XwrxKuPvYUILiOnOZTLg==

I believe that would be the solution, as additionally it would also follow similar style of already defined default passwords for other admins users (e.g.: rhq.server.database.password) in the server properties file. If there is a better solution kindly let me know.

Meanwhile, I will raise a PR accordingly to make explicit my proposed solution.