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Rootless podman - subuid / subgid issue #59

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@kuhball

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@kuhball

I'm trying to get pretalx to run within rootless podman. Pulling the image from dockerhub the following issue occurs:

Error: copying system image from manifest list: writing blob: adding layer with blob "sha256:3e45d37343fb3198922fe73f2463b28816b2bade1ae4707c3b2282944d7ceaa1": processing tar file(potentially insufficient UIDs or GIDs available in user namespace (requested 1618591017:1876110778 for /pretalx/src/pretalx/frontend/schedule-editor/node_modules/character-parser/.npmignore): Check /etc/subuid and /etc/subgid if configured locally and run "podman system migrate": lchown /pretalx/src/pretalx/frontend/schedule-editor/node_modules/character-parser/.npmignore: invalid argument): exit status 1

In rootless podman the user normally gets a start uid and a range - f.e. core:100000:1000000. Looking at the requested id's this seems unnecessarily high and far from each other. Is there a particular reason for this?

Workaround is to build the image locally within rootless podman.

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