Create Dockerfile

Dockerfile

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+FROM python:3.10-slim
+
+WORKDIR /app
+
+# Copy requirements from backend folder
+COPY backend/requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy all code from backend folder
+COPY backend/ .
+
+# Hugging Face Docker Spaces use port 7860
+ENV PORT=7860
+EXPOSE 7860
+
+# Start FastAPI
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "7860"]