Description: Arbitrary-precision arithmetic system and calculator — in a container!
Fedora Account System Username: mattdm
Setting 'help' as the default command makes it unclear how to run the container in interactive mode...which also means that anything involving i/o redirection will also fail, as in:
echo 2+2 | docker run -i --rm calc
docker run -i --rm calc < somefile
It turns out that passing an empty command will work...
docker run -it --rm calc ''
...but that isn't necessarily intuitive. I would just drop the CMD directive from the Dockerfile.
I also had a hard time trying to use this app. Building against a container that should probably be EOL. Despite that it seems to build.