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@@ -7,12 +7,24 @@ ENV PYTHONDONTWRITEBYTECODE=1
 
 WORKDIR /app
 
-# System deps for PyPDF and unstructured
+# System deps for PyPDF + Redis Stack
 RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
     libgomp1 \
+    ca-certificates \
+    curl \
+    gnupg \
     && rm -rf /var/lib/apt/lists/*
 
+# Redis Stack (for vector search)
+RUN set -eux; \
+    curl -fsSL https://packages.redis.io/gpg | gpg --dearmor -o /usr/share/keyrings/redis-archive-keyring.gpg; \
+    echo "deb [signed-by=/usr/share/keyrings/redis-archive-keyring.gpg] https://packages.redis.io/deb $(. /etc/os-release && echo $VERSION_CODENAME) main" \
+      > /etc/apt/sources.list.d/redis.list; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends redis-stack-server; \
+    rm -rf /var/lib/apt/lists/*
+
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
@@ -21,6 +33,9 @@ COPY . .
 # FAISS index dir (ephemeral per session — wiped on container restart)
 RUN mkdir -p /app/faiss_indexes /app/context
 
+ENV REDIS_URL=redis://localhost:6379
+ENV CACHE_ENABLED=true
+
 EXPOSE ${PORT}
 
-CMD uvicorn rag_system.api:app --host 0.0.0.0 --port ${PORT} --workers 1
+CMD ["/bin/sh", "-c", "redis-stack-server --save '' --appendonly no & uvicorn rag_system.api:app --host 0.0.0.0 --port ${PORT} --workers 1"]