Add --build-arg support

[ShadowCoder22]

Docker allows users to pass arguments to the build command. This is useful for cases where a developer has to calculate a variable at build time. Please consider adding support for this feature.

[bjornmagnusson]

As I see it, only reason for using this property would be when using an static/external Dockerfile. When plugin is generating the Dockerfile you already can provide properties from within you build script

[bjornmagnusson]

Unsupported in docker-java 2.2.0 (used by plugin in master). Needs docker-java 3.0.0+, which includes breaking changes. Postpone this to an later release.

[gclayburg]

It would be nice to have this so that you could add build time arguments to a Dockerfile LABEL like this

docker build --build-arg VCS_REF=`git rev-parse --short HEAD` .

[chadlwilson]

Yes; or to pass parameters to other Dockerfile elements that the plugin doesn't have support for; such as HEALTHCHECK

[mklueh]

News on this? Need to disable the cache

[bjornmagnusson]

No work has been done. It is indeed a wanted feature We do welcome PRs.

[jainarpit6]

Any progress on this ?