- Change cache host from 'host.docker.internal' to empty string
- Allow act_runner to auto-detect the correct host IP address
- Update all runner configs: docker, heavy, light, security
- Improve troubleshooting scripts with host IP detection:
- Linux/macOS: Use ip route, hostname -I, or ifconfig
- Windows: Use Get-NetIPAddress PowerShell cmdlets
- Update documentation to reflect auto-detection approach
This resolves the 'getaddrinfo ENOTFOUND host.docker.internal' error
by using a more compatible approach that works across different
Docker setups and operating systems.
