Make it possible to select the output format for Commit() and the
imagebuildah package, and wire that through to a --format option in the
CLI's "commit" and "bud" commands.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Closes: #118
Approved by: rhatdan
Have 'from', 'commit', and 'build-using-dockerfile' report progress via
stderr (so that capturing output from 'from' and 'commit' still works as
expected) unless --quiet is used to suppress the reporting.
Closes#94.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Closes: #98
Approved by: rhatdan
