Configuration regtest

Hi, i’m beginner in zcash
can you explain about this command?
docker run -it -d -p 16001:16001 -p 16002:16002 -p 16003:16003 coinfoundry/zcash-private-testnet
and about the other command:
docker exec -i -t <container_id> /usr/bin/dash-cli -datadir=/data/node-pool generate 1
1 in the end is number of blocks that generated?