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PERF: Reduce compressed base image size by ~25MB (~2%) - #1116
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davidtaylorhq
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August 20, 2026 08:24
- ~19MB - Mount tmpfs when installing nginx. Matches other apt steps in the docker file - Same for postgres/redis, so that the 19MB doesn't move to their layer - ~6MB - Mount tmpfs over /root/.cache when installing pups. `gem fetch` downloads the whole RubyGems spec index - Pass `--package-import-method hardlink` to pnpm install. This does not change the size of our CI builds, which already hardlink. But it stops pnpm using reflinks on supported filesystems (btrfs, XFS, OrbStack). If reflinks are used, they are lost during the packaging process, so we silently double the cost of node_modules. On OrbStack this saves ~115MB.
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~19MB - Mount tmpfs when installing nginx. Matches other apt steps in the docker file
Same for postgres/redis, so that the 19MB doesn't move to their layer
~6MB - Mount tmpfs over /root/.cache when installing pups.
gem fetchdownloads the whole RubyGems spec indexPass
--package-import-method hardlinkto pnpm install. This does not change the size of our CI builds, which already hardlink. But it stops pnpm using reflinks on supported filesystems (btrfs, XFS, OrbStack). If reflinks are used, they are lost during the packaging process, so we silently double the cost of node_modules. On OrbStack this saves ~115MB.