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feat: allow specifying Kaniko targets for multi-stage dockerfiles#436
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…tion to skip building unused layers
Any chance getting this reviewed sometime soon? This is blocking the adoption of coder for our org, as we rely on multi-stage dockerfiles and devcontainers for most of our repositories. |
bedaberner commentedMay 27, 2025
I would also love to get this. |
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I've encountered issues with large multi-stage dockerfiles when targeting one particular stage. For example, if we have a devcontainer.json like
and a Dockerfile as the following
then running
docker run -it -v /my/repo:/workspaces/empty coder/envbuilder:latestwill result in the following errorThis is because we don't specify the build target in
KanikoOptions. Specifying this option can also substantially decrease build times, especially when combined with theSkipUnusedStagesoption - which can allow for large unused build stages to be avoided entirely.