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Dockerfile

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+FROM python:3.10-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app/ ./app/
+COPY app.py .
+
+CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]

app.py

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+from fastapi import FastAPI
+from pydantic import BaseModel
+from app.chatbot_module import get_bot_answer
+from fastapi.middleware.cors import CORSMiddleware
+
+app = FastAPI()
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],  # Optional, for frontend integration
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+class ChatRequest(BaseModel):
+    query: str
+
+@app.post("/chat")
+async def chat(request: ChatRequest):
+    response = get_bot_answer(request.query)
+    return {"response": response}

requirements.txt

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+fastapi==0.110.0
+uvicorn==0.29.0
+langchain==0.1.14
+langchain-community==0.0.34
+sentence-transformers==2.2.2
+faiss-cpu==1.7.4
+transformers==4.41.0
+huggingface_hub==0.23.1
+pydantic==1.10.12