Install pigz and unpigz to speed up docker image extraction

[peterzhuamazon]

Description

Install pigz and unpigz to speed up docker image extraction

Issues Resolved

Closes #374

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[peterzhuamazon]

Have double verify that pigz will also install unpigz.

[gaiksaya]

Do we need this package on windows as well? To full the images faster?

[prudhvigodithi]

Thanks, just installing pigz would take care of parallel docker extraction? I'm curious why docker dont directly install it as pre-req. :)

[peterzhuamazon]

Do we need this package on windows as well? To full the images faster?

It is already installed on Windows and reduced time from 15-20min to 12min 😄
https://github.com/opensearch-project/opensearch-ci/blob/main/packer/scripts/windows/scoop-install-commons-docker-support.ps1#L76-L87

[peterzhuamazon]

Thanks, just installing pigz would take care of parallel docker extraction? I'm curious why docker dont directly install it as pre-req. :)

Yes, there is a long history of thread to get pigz/unpigz support in docker.
As of now, docker build is still single thread and docker pull/extraction can support unpigz if detected in path.
The thing is docker maintainers seems still thinking parallelism can cause trouble between, thus not suggesting it by default. Thanks.