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Copying symlink from previous stage fails instead of overwriting

Copying symlink from previous stage fails instead of overwriting: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). Actual behavior COPY --from=0 X Y where X is a symlink from stage 0 and Y is an pre-existing symlink in the current stage fails with "file exists". Expected…

The task

Actual behavior COPY --from=0 X Y where X is a symlink from stage 0 and Y is an pre-existing symlink in the current stage fails with "file exists". Expected behavior COPY --from=0 X Y where X is a symlink from stage 0 and Y is a pre-existing symlink in the current stage should…

Part of XiaomiMiMo/MiMo-V2.6-RL-oss.