Replace hardcoded CMD arguments with ENV directives:
- AETHERA_LISTEN=0.0.0.0
- AETHERA_PORT=8080
- AETHERA_DATA_DIR=/app/data
This allows runtime configuration via docker run -e or compose files.
- Add Dockerfile for containerized deployment
- Add .drone.yml for CI/CD pipeline configuration
- Add docker and docker-run targets to Makefile
- Configure port 8080 binding and persistent volume mount