fix model problem

Dockerfile

@@ -1,28 +1,46 @@
-# Use a Python 3.9 base image
+# Use Python 3.9 slim base image for better compatibility
 FROM python:3.9-slim
 
-# Set working directory
-WORKDIR /code
-
-# Copy requirements file
-COPY ./requirements.txt /code/requirements.txt
+# Set environment variables
+ENV PYTHONUNBUFFERED=1
+ENV PYTHONDONTWRITEBYTECODE=1
 
-# Install dependencies
-RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    curl \
+    software-properties-common \
+    git \
+    && rm -rf /var/lib/apt/lists/*
 
 # Create a non-root user for security
 RUN useradd -m -u 1000 user
 USER user
-ENV HOME=/home/user PATH=/home/user/.local/bin:$PATH
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH
 
-# Set app directory
+# Set working directory
 WORKDIR $HOME/app
 
-# Copy all project files
-COPY --chown=user . $HOME/app
+# Copy requirements first for better caching
+COPY --chown=user:user requirements.txt .
+
+# Install Python dependencies with better error handling
+RUN pip install --no-cache-dir --upgrade pip && \
+    pip install --no-cache-dir --timeout 300 -r requirements.txt
 
-# Expose port 7860 (Hugging Face default)
+# Copy all application files
+COPY --chown=user:user . .
+
+# Create necessary directories
+RUN mkdir -p data chroma_db_multilingual
+
+# Expose port 7860 (Hugging Face Spaces default)
 EXPOSE 7860
 
-# Run the FastAPI app with uvicorn
-CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]
+# Health check
+HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:7860/health || exit 1
+
+# Run the FastAPI application
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]

requirements.txt

@@ -1,13 +1,32 @@
+# Core FastAPI and server
 fastapi==0.115.0
-uvicorn==0.30.6
+uvicorn[standard]==0.30.6
+pydantic==2.9.2
+
+# LangChain ecosystem
 langchain==0.3.1
 langchain-community==0.3.1
 langchain-core==0.3.6
 langchain-google-genai==2.0.1
-langchain-huggingface==0.1.0
+
+# LlamaIndex - using stable versions
+llama-index==0.10.57
+llama-index-llms-google==0.1.13
+llama-index-embeddings-huggingface==0.2.2
+
+# Vector stores and search
 chromadb==0.5.5
+rank-bm25==0.2.2
+
+# ML and embeddings
 sentence-transformers==3.1.1
+huggingface-hub==0.25.2
+transformers==4.45.2
+
+# Google AI
+google-generativeai==0.8.2
+
+# Utilities
 python-dotenv==1.0.1
-rank_bm25==0.2.2
-pydantic==2.9.2
-langdetect==1.0.9
+langdetect==1.0.9
+numpy==1.26.4