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@@ -76,8 +76,8 @@ EXPOSE 7860
 
 # Health check
 HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
-    CMD python -c "import requests; requests.get('http://localhost:7860/')" || exit 1
+    CMD curl -f http://localhost:7860/health || exit 1
 
-# Run the app with python
+# Run the app with uvicorn
 ENV ENABLE_WEB_INTERFACE=true
-CMD ["sh", "-c", "cd /app/env && python -m server.app"]
+CMD ["sh", "-c", "cd /app/env && uvicorn server.app:app --host 0.0.0.0 --port 7860"]

server/app.py

@@ -1,10 +1,11 @@
 # -*- coding: utf-8 -*-
 """
-Minimal Gradio server for the Quantum Circuit Optimization Environment.
+FastAPI server with Gradio UI for the Quantum Circuit Optimization Environment.
 
 Deployment spec:
-  - Gradio UI at root
-  - Port: 7860 (managed externally by HF Spaces)
+  - Root endpoint:  GET /          → health check JSON
+  - Gradio UI:      mounted at     /
+  - Port:           7860  (managed externally by HF Spaces)
 """
 
 import json
@@ -19,6 +20,7 @@ for _p in (_ROOT, _HERE):
     if _p not in sys.path:
         sys.path.insert(0, _p)
 
+from fastapi import FastAPI
 import gradio as gr
 
 from models import ActionType, GateType, QuantumAction, QuantumObservation
@@ -27,6 +29,23 @@ from server.my_env_environment import QuantumCircuitEnvironment
 logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger(__name__)
 
+# ---------------------------------------------------------------------------
+# FastAPI base app
+# ---------------------------------------------------------------------------
+fastapi_app = FastAPI(title="Quantum Circuit Optimizer")
+
+@fastapi_app.get("/health")
+def health():
+    return {"status": "ok", "message": "Quantum Circuit Optimizer is running"}
+
+@fastapi_app.get("/api/info")
+def info():
+    return {
+        "name": "Quantum Circuit Optimization Environment",
+        "version": "1.0.0",
+        "gradio_ui": "Available at root path /"
+    }
+
 # ---------------------------------------------------------------------------
 # Global environment instance (for Gradio UI)
 # ---------------------------------------------------------------------------
@@ -186,7 +205,7 @@ def do_step(action_type, gate_type, qubit_0, qubit_1, parameter):
 
 
 # ---------------------------------------------------------------------------
-# Minimal Gradio UI
+# Gradio UI
 # ---------------------------------------------------------------------------
 
 def create_gradio_app() -> gr.Blocks:
@@ -226,12 +245,16 @@ def create_gradio_app() -> gr.Blocks:
 
 
 # ---------------------------------------------------------------------------
-# Create Gradio app
+# Create Gradio app and mount to FastAPI
 # ---------------------------------------------------------------------------
-app = create_gradio_app()
+demo = create_gradio_app()
+
+# Mount Gradio to FastAPI at root path
+app = gr.mount_gradio_app(fastapi_app, demo, path="/")
 
 # ---------------------------------------------------------------------------
 # Entry Point (for local testing only)
 # ---------------------------------------------------------------------------
 if __name__ == "__main__":
-    app.launch(server_name="0.0.0.0", server_port=7860)
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=7860)