The version sub command serves litle purpose of its own, but for troubleshooting. The docker related sub-commands dockertest and dockerdeploy rely on cooperation between the fsst version on the host system and the one on the invoked docker image. For this purpose, the version subcommand exists. If the two fsst tools have roughly the same version, for example 0.2.2 and 0.2.5, there should be no wories about the correct workings. If however the image has version 0.1.x and the host system has 0.2.5, the docker related sub commands that require cooperation between the host and the docker image version of the fsst tool will not work.
The version subcommand only displays the version of the invoked fsst tool. To compare versions, use the versioncheck command instead.
For use in a CICD setup, it is suggested to always include an invokation of this subcommand for debugging purposes.
./ffst version