ci: Only force linux/amd64 for legacy rstudio/* images#44
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The legacy rstudio/* Docker Hub images and their ghcr.io/rstudio/* mirrors are amd64-only, so without an explicit platform pin the pull fails on arm64 hosts with "no matching manifest for linux/arm64/v8". Modern ghcr.io/posit-dev/* and posit/* images ship multi-arch manifests. Scope the platform pin to rstudio/ and ghcr.io/rstudio/ namespaces. On amd64 hosts behavior is unchanged. On arm64 hosts, modern images now run natively instead of through Rosetta/QEMU emulation.
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This makes sense in principle. Do you think we could add a test to ci.yml that would confirm that we can run the arm images? Or something that is a better test?
Add ubuntu-24.04-arm to test-action's runner matrix and drop the explicit version: 2024.08.0 input so the default resolves to ghcr.io/posit-dev/connect:latest. That image is multi-arch, so the new "let multi-arch resolve natively" code path runs natively on both runners instead of needing amd64 emulation on arm64. test-cli is unchanged: its --version 2024.08.0 covers the CLI entry point and the legacy version mapping.
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The legacy
rstudio/*Docker Hub images and theirghcr.io/rstudio/*mirrors are amd64-only, so without an explicit platform pin the pull fails on arm64 hosts withno matching manifest for linux/arm64/v8. Modernghcr.io/posit-dev/*andposit/*images ship multi-arch manifests.Scope the platform pin to
rstudio/andghcr.io/rstudio/namespaces only. On amd64 hosts behavior is unchanged. On arm64 hosts, modern images now run natively instead of through Rosetta/QEMU emulation.