Tom Klingenberg ee0fc93fa0 import environment variables that are present ...

previously docker did import environment variables if they were present
but created them if they were not when it was asked via a --env-file
cli option to import but not create them.

fix is to only import the variable into the environment if it is present.

additionally do not import variable names of zero-length (which are lines
w/ a potential variable definition w/o a variable name).

refs:

- https://github.com/docker/for-linux/issues/284

Signed-off-by: Tom Klingenberg <tklingenberg@lastflood.net>
Upstream-commit: 96c026eb30
Component: cli

2018-07-02 07:37:12 +02:00

components/cli

import environment variables that are present

2018-07-02 07:37:12 +02:00

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