get_docker_info(), get_docker_outdated(), reconstruct_docker_run() and
the _docker_bin() hook go, with the image-ID helpers. netOrk reads and
handles containers over the Engine API through open_container_engine()
since NetOrk/netork#765 and no longer calls them (phase 9). The
fix_docker_permissions action stays: it is an OS action.
Version 0.3.0.