Why not give binaries that can be run directly, similar to geth, and use wget to download directly

[ZYS980327]

**It seems more convenient to run the compiled files directly

[jagerman]

Agreed; a docker-only distribution model is a pretty unfriendly software distribution model.

I wrote this little shell script to build and then and extract the nitro binary out of the source code:

#!/bin/bash

set -e -x

docker build . --tag nitro-node
docker create --name nitro-tmp-extract nitro-node
docker cp -a nitro-tmp-extract:/usr/local/bin/nitro nitro
docker rm nitro-tmp-extract

or this should work to extract the binary from an official docker image (obviously change the tag as needed):

#!/bin/sh

set -e -x

docker create --name nitro-tmp-extract offchainlabs/nitro-node:v2.3.3-6a1c1a7
docker cp -a nitro-tmp-extract:/usr/local/bin/nitro nitro
docker rm nitro-tmp-extract