Ryan Brainard 44a91e6ba8 Resolve environment without values to values on host
For parity with the Docker CLI, allow environment variables without
values to be automatically resolved to their values on the host.

Signed-off-by: Ryan Brainard <brainard@heroku.com>

Conflicts:
	tests/integration/service_test.py
2014-07-11 10:18:05 -07:00
..
2014-01-06 17:58:49 +00:00