This patch adds a new command-line flag (`--rm`) to automatically
stop workflow container(s), just prior to exit. The default
behavior is kept, e.g.: the containers continue running at exit.
Fixes: #694
Signed-off-by: Joseph Benden <joe@benden.us>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>