Reduce default Docker image size in 7.x #75079
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The `centos:8` image hasn't been updated for a while, and now the image layer for updating it via `yum` is larger than the base image. Address this by adopting the strategy for 8.0, where we build a custom base image from `centos:8` and use that instead. The implementation here differs in that `yum` is still available in the custom image, making it more like the CentOS image. This work saves roughly 200MB.
pugnascotia
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>enhancement
:Delivery/Packaging
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Pinging @elastic/es-delivery (Team:Delivery) |
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Also FYI @mieciu |
mieciu
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Jul 12, 2021
mark-vieira
approved these changes
Jul 21, 2021
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@mark-vieira Kind of - we don't build a static |
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@mieciu I've merged this PR, can you confirm that I haven't broken Cloud? |
pugnascotia
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Aug 19, 2021
Closes elastic#76695. Due to a Kubernetes quirk, we need to ensure that the `tar` CLI tool is present in the Docker image. It was removed in elastic#75079 because we reworked how the image was built, and anything not explicitly installed was left out.
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pugnascotia
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The
centos:8image hasn't been updated for a while, and now the imagelayer for updating it via
yumis larger than the base image. Addressthis by adopting the strategy for 8.0, where we build a custom base
image from
centos:8and use that instead. The implementation herediffers in that
yumis still available in the custom image, making itmore like the CentOS image, and therefore less breaking than the 8.0
changes.
Before: 1.04GB
After: 806MB