Fix startup script execution by explicitly using bash

- Change CMD to explicitly use bash interpreter
- Resolves "unknown command for ollama" error
- Ensures script runs properly regardless of base image ENTRYPOINT

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: YedPool

cerebrium/Dockerfile

@@ -74,4 +74,4 @@ HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
     CMD curl -f http://localhost:11434/api/tags || exit 1
 
 # Start both services
-CMD ["/app/start.sh"]
+CMD ["/bin/bash", "/app/start.sh"]