Changes the docker repo location for the test img
Changes the docker repo location for the test img

and adds some more hints on docker usage.
ricsirigu/OCDB,ricsirigu/OCDB,jjdblast/OCDB,fraunhoferfokus/OCDB,fraunhoferfokus/OCDB,fraunhoferfokus/OCDB,jjdblast/OCDB,jjdblast/OCDB,ricsirigu/OCDB