The GitHub miner setup doc shows that you should mount -v <your local data path>:/data, however /data isn’t used by the Creditcoin docker container as the DB storage location, /root/.local/share/creditcoin-node/chains/creditcoin/db/full is.
I think this is a bug and should actually be -v /data:/root/.local/share/creditcoin-node or the docker container config should be updated to store the blockchain DB in /data and not /root/.local/share/creditcoin-node