Update Dockerfile

Dockerfile

@@ -1,15 +1,34 @@
+# Base image
 FROM python:3.11-slim
 
-RUN apt-get update && apt-get install -y git wget curl build-essential
-
+# Set working directory
 WORKDIR /app
 
+# System dependencies
+RUN apt-get update && apt-get install -y git wget curl build-essential && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements first (to leverage Docker cache)
 COPY requirements.txt .
+
+# Install Python deps
 RUN pip install --no-cache-dir -r requirements.txt
 
+# Setup cache dir
+ENV HF_HOME=/app/cache
+ENV TRANSFORMERS_CACHE=/app/cache
+ENV SENTENCE_TRANSFORMERS_HOME=/app/cache
+
+# Pre-download model during build
+RUN python -c "from sentence_transformers import SentenceTransformer; SentenceTransformer('sentence-transformers/clip-ViT-B-32', cache_folder='/app/cache')"
+
+# Copy rest of the code
 COPY . .
 
+# Build FAISS index at image build time (optional, can be done once locally instead)
+RUN python build_index.py
+
+# Expose port
 EXPOSE 7860
 
-# Build index if missing, then run FastAPI
-CMD ["bash", "-c", "python build_index.py && uvicorn main:app --host 0.0.0.0 --port 7860"]
+# Start API
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]