Optimize docker compose

[Simon-Tl]

optimize

• Optimize the image storage address for faucet, explorer
• Optimize the README file
• Failed to process the blockscan index.

[jiangxianliang007]

Axon repo https://github.com/axonweb3/axon/blob/main/docker-compose.yml already has a docker-compose to start a single Axon node.

Do you need a docker-compose that can start 4 axon nodes?

[Flouse]

• replaced by https://github.com/axonweb3/axon-devops/pull/168