docs: update CPA compose deployment guide

[xinxingi]

Use bind-mounted CPA config, auth, and log paths for the CPA + CPAMP Compose example.

Add setup commands for required host directories and config.yaml, plus a minimal CPA Management API config needed before running docker compose.

If the following configuration is not performed, the following will be obtained:

Summary by CodeRabbit

• Documentation
  • Updated the Docker Compose setup guide for deploying CPA and CPAMP together.
  • Added clearer pre-start steps to create required host folders and configuration files before running Compose.
  • Expanded the sample configuration with the minimum settings needed for API access.
  • Reworked the example to use explicit service names and host-mounted paths for easier setup and persistence.

[Copilot]

Pull request overview

Updates the Compose deployment documentation for running CPA (CLIProxyAPI) together with CPA Manager Plus (CPAMP), switching from named volumes to bind-mounted host paths and adding pre-start setup/config steps so the stack boots cleanly and CPAMP can reach CPA’s management API.

Changes:

• Updated the Compose example to use explicit service container names, depends_on, and bind-mounted host paths for CPA config/auth/logs and CPAMP data.
• Added pre-start commands to create required host directories and ensure config.yaml exists as a file before running Compose.
• Added a minimal config.yaml example enabling CPA remote management and API keys for CPAMP connectivity.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
README.md	Updates the English Compose deployment guide with bind mounts + minimal CPA config and setup steps.
README_CN.md	Mirrors the same Compose guide updates in Chinese.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.