What does the below output mean and how to free it? I don't even know how is it used. Could not find much info. Any pointers are appreciated.
I am running this inside my docker container-df -h.
command. This docker container is deployed from compose file on docker swarm cluster. I am on mac os and docker version is 17.06.1-ce
bash-4.3$ df -h .
Filesystem Size Used Available Use% Mounted on
overlay 62.7G 59.5G 67.2M 100% /
bash-4.3$