If you know any docker, that line is pretty basic, so you shouldn't copy-paste it, just write it from scratch: docker run -it --rm -v `pwd`:/mnt ubuntu bash A

If you know any docker, that line is pretty basic, so you shouldn't copy-paste it, just write it from scratch: docker run -it --rm -v `pwd`:/mnt ubuntu bash Also, this one works, the other one doesn't ;)