what is tempfs in docker volume and how it use it?
This is in-memory file system
Tt will not be seen anywhere in the host/container filesystem
This volume cannot be shared among containers
Once container is stopped/restarted stored info will be lost
It is recommended to use for high speed temporary storage
# command to run container with tmpfs volume
docker run -itd --name ezhil4 --mount type=tmpfs,destination=/opt/tmpfs ubuntu
# docker inspect of tmpfs container, there will be no source for tmpfs
"Mounts": [
{
"Type": "tmpfs",
"Source": "",
"Destination": "/opt/tmpfs",
"Mode": "",
"RW": true,
"Propagation": ""
}
]