Initial release.
Thanks to @shishir-a412ed @soharaki @fuweid @knight42 @alexellis for contribution.
About the binaries
The binaries were built automatically on GitHub Actions.
See the log to verify SHA256SUMS.
https://github.com/containerd/nerdctl/actions/runs/410619530
The sha256sum of the SHA256SUMS file itself is 12f3a4b614e7aa6e70a280854776c5de0607c63cf9b1c18039dad6afd746f0c7 .