hdf sandbox - schema registry

[#1]

Hi All,

I am running the hdf sandbox and trying to do a sample - couple of challenges

1. how to see the logs - when I ssh into the docker container by ssh root@172.17.0.1 - I don't see any /usr/hdf or /var/log/registry directories

2. while adding a avro schema - gets error ' Given schema is invalid' - attached screenshot

Thanks,

Avijeet