The docker-pushrm image (busybox-based) has no WORKDIR set, defaulting to /. FindReadmeFile() searches ./ relative to WORKDIR, so the file must be at /README.md, not /data/ or /workspace/.
The docker-pushrm image (busybox-based) has no WORKDIR set, defaulting to /. FindReadmeFile() searches ./ relative to WORKDIR, so the file must be at /README.md, not /data/ or /workspace/.