Config Docker volume

[at15]

On Ubuntu, it seems aufs is the default, there is also overlayFS, and mount volume

• https://docs.docker.com/engine/userguide/storagedriver/aufs-driver/
• there should be some performance overhead when we run db in containers, but need to measure them https://stackoverflow.com/questions/25491212/docker-container-io-performance
• btw: data is persist after container is stopped https://stackoverflow.com/questions/28574433/do-docker-containers-retain-file-changes
• docker volume ls
• it seems InfluxDB and Cassandra all have volume configured in Dockerfile
  • https://github.com/influxdata/influxdata-docker/blob/3a8019600cefcb4ffc85c3e3a155980d2dc3f5ff/influxdb/1.2/Dockerfile#L22
  • https://docs.docker.com/engine/reference/builder/#volume
• https://docs.docker.com/engine/tutorials/dockervolumes/#add-a-data-volume

[at15]

Closed in favor of #60