Add to command line reference.
Signed-off-by: Daniel Nephin <dnephin@docker.com>
Upstream-commit: 644fd804fce63499812259331b0a9f2a4a3ebcc4
Component: engine
Load from env should only happen if the value is unset.
Extract a buildEnvironment function and revert some changes to tests.
Signed-off-by: Daniel Nephin <dnephin@docker.com>
Upstream-commit: a9c86b63c03fc3557748d7792c11041387cb93d9
Component: engine
For an environment variable defined in the yaml without value,
the value needs to be propagated from the client, as in Docker Compose.
Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
Upstream-commit: ea43c33330ec9a1e9a9b8a85348c1757fdae65c4
Component: engine