I think that command redirected $ docker
commands to the docker machine. Now all my docker commands are giving me an error FATA[0000] Couldn\'t read ca cert.
I had been searching for an answer to this for quite awhile. Shortly after posting the question on stackoverflow I realized typing in to the terminal the export commands docker gives on startup resolved my issue.
To connect the Docker client to the Docker daemon, please set:
export DOCKER_HOST=tcp:// some IP address
export DOCKER_CERT_PATH= some file path
export DOCKER_TLS_VERIFY=1