Add Jenkins user to Docker image earlier

Docker Setup stage fails with a permissions error if run in the existing manner.
This appends the user creation to the Dockerfile so that the commands get run as
root.

Change-Id: Ib9deee967586792e8c932c875a34bd3ff5aec918
Signed-off-by: Wesley Hirsch <wesley.hirsch@riftio.com>
1 file changed