Hi folks. I am looking to write a plugin that can ...
# pluginsa
alert-dawn-51425
02/09/2023, 11:01 PMHi folks. I am looking to write a plugin that can read a version file from the pex_binary and use that to generate the tags on a docker image. Does anyone have any pointers on what is a good way of accomplishing this?
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cool-yacht-37128
02/10/2023, 12:01 AMThe example plugin actually shows how to write a plugin that does custom tags:
https://www.pantsbuild.org/docs/tagging-docker-images#providing-additional-image-tags-with-a-plugin that's a good start
cool-yacht-37128
02/10/2023, 12:01 AMI've had a play myself, wanting to implement this: https://pantsbuild.slack.com/archives/C046T6T9U/p1671148361756449
But I'm not a very strong python developer, and I'm not 100% clear on how to connect the setuptools_scm/vcs_version to the custom image tags rule.
cool-yacht-37128
02/10/2023, 12:03 AMThe way I'm doing what you are describing today is by doing version tagging external to pants via autotag, exporting that value to a env var, and including that env var for the build_args: https://www.pantsbuild.org/docs/tagging-docker-images#using-env-vars-to-include-dynamic-data-in-tags
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curved-television-6568
02/10/2023, 1:20 AMThere’s also an upcoming tutorial series by @fresh-cat-90827 (available on Github for the time being) starting off with showing how to write a plugin that reads a version from a file.
https://github.com/pantsbuild/pants/tree/main/docs/markdown/Tutorials
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alert-dawn-51425
02/13/2023, 6:31 PM@curved-television-6568 thanks for that link. It was incredibly helpful.
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c
curved-television-6568
02/13/2023, 6:33 PMHappy it was useful. Credits should all be directed at @fresh-cat-90827 for writing it up 😄
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