container.go: fix spelling of docker option to `ps`

--quit should be --quiet

the net effect was to break crane rm:  the exists() call would return
false, so crane would never rm the container.  Similarly for start
Merge branch 'fix_rm_and_start_commands'

* fix_rm_and_start_commands:
  container.go: fix spelling of docker option to `ps`
verbose logging of commands used in pipedCommandOutput

for debugging