How to run this explorer (Blockchain)?

How to run the explorer for Bitcoin testnet3?

zrock23@DESKTOP-950AS07:~$ docker run -p 50001:50001 -p 8084:80 \

–volume $PWD/data_bitcoin_testnet:/data
–rm -i -t esplora
bash -c “/srv/explorer/run.sh bitcoin-testnet explorer”
Unable to find image ‘esplora:latest’ locally
docker: Error response from daemon: pull access denied for esplora, repository does not exist or may require ‘docker login’: denied: requested access to the resource is denied.
See ‘docker run --help’.


I am a trader interested in blockchain implementation services in online stores. I need help. How can this code work?