Clarification about 'docker build --build-arg'

See #22860

Signed-off-by: Nahum Shalman <nshalman@omniti.com>
This commit is contained in:
Nahum Shalman 2016-05-23 10:01:59 -04:00
parent 5f95750ab4
commit fd7d99ed28

View file

@ -298,6 +298,9 @@ accessed like regular environment variables in the `RUN` instruction of the
Dockerfile. Also, these values don't persist in the intermediate or final images
like `ENV` values do.
Using this flag will not alter the output you see when the `ARG` lines from the
Dockerfile are echoed during the build process.
For detailed information on using `ARG` and `ENV` instructions, see the
[Dockerfile reference](../builder.md).