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Merge pull request #10145 from duglin/Issue10141

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Docker run -e FOO should erase FOO if FOO isn't set in client env
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Michael Crosby
2015-01-21 14:16:51 -08:00
parent b8fe989b9b 9ab73260f8
commit edaf23b7a7
4 changed files with 106 additions and 7 deletions
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docs/sources/reference/commandline/cli.md
+6 -3
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@@ -1736,9 +1736,12 @@ ports in Docker.
This sets environmental variables in the container. For illustration all three
flags are shown here. Where `-e`, `--env` take an environment variable and
value, or if no "=" is provided, then that variable's current value is passed
through (i.e. `$MYVAR1` from the host is set to `$MYVAR1` in the container). All
three flags, `-e`, `--env` and `--env-file` can be repeated.
value, or if no `=` is provided, then that variable's current value is passed
through (i.e. `$MYVAR1` from the host is set to `$MYVAR1` in the container).
When no `=` is provided and that variable is not defined in the client's
environment then that variable will be removed from the container's list of
environment variables.
All three flags, `-e`, `--env` and `--env-file` can be repeated.
Regardless of the order of these three flags, the `--env-file` are processed
first, and then `-e`, `--env` flags. This way, the `-e` or `--env` will