Docker setup documentation issue

[kitherill]

The Docker setup instructions in the README.md need to be updated to ensure the Docker image can be properly built and run.

Current issues:

1. The docker run command fails with "pull access denied for ey-core-cli" even after building the image locally
2. Need to ensure the Docker image name is consistent between build and run commands

Suggested fix:

• Verify the Docker image naming and tagging process
• Update the README.md with correct Docker commands
• Consider adding troubleshooting steps for common Docker issues