Update Dockerfile

Dockerfile

@@ -1,20 +1,16 @@
 # Dockerfile
 FROM python:3.9-slim
 
-# Set a working directory
-# WORKDIR /app
+# 1) system deps
 RUN apt-get update && apt-get install -y socat && rm -rf /var/lib/apt/lists/*
 
-# Copy dependency definitions and install them
+# 2) python deps
 COPY requirements.txt .
 RUN pip install --upgrade pip && pip install --no-cache-dir -r requirements.txt
 
-# Copy the application code
-COPY . .
+# 3) application code -> writable layer
+WORKDIR /app          # ←  writable because it’s created now
+COPY . .               # app.py will be /app/app.py
 
-# Expose the port that uvicorn will listen on (Hugging Face Spaces uses port 7860)
 EXPOSE 7860
-
-# Start the FastAPI app with uvicorn
 CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]
-# CMD ["python", "app.py"]