Simple example of a docker container that supports dRunner.
drunner install drunner/helloworld
helloworld run
drunner install drunner/helloworld [SERVICENAME]
on the host calls the install script in the container. It adds the scripts for the other commands to the host (in our case just help and run). SERVICENAME defaults to helloworld.
You can then use
SERVICENAME run
to execute the 'run' script, which launches the container and runs helloworld.