frun, also known as Fake OCI Runtime, a small tool for checking gaps in CRI/container engine behavior
frun currently does not conform to the OCI Container runtime specification (https://github.com/opencontainers/runtime-spec).
frun is currently written by the shell and only provides the parameters passed by the CRI to the OCI Runtime , the environment variables, both of which may change in the future
Perhaps there are better names, such as prun also known as Pretend to run, runpc also known as run Pretend Container, etc.
Inspired by google/gvisor#6849 (comment)
Maybe there's a better way to do this that I don't know about