dockerfile: allow uid/gid in cache mounts #1017
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Allow setting
uid/gid/modeon cache mounts. The real fix would be to implement this in LLB (with tmpfs mount), the current is a workaround directly in frontend to support all versions of the daemon.There are some issues on doing chown/chmod on the root path that need to be investigated and probably need containerd changes. @dmcgowan The current implementation uses subdir to overcome that.
Signed-off-by: Tonis Tiigi tonistiigi@gmail.com