Update Dockerfile

Dockerfile

@@ -11,7 +11,7 @@ SHELL ["/bin/bash", "-c"]
 # ── System dependencies (root) ───────────────────────────────────────────────
 RUN echo "[build] Installing system deps..." && START=$(date +%s) \
   && apt-get update \
-  && apt-get install -y --no-install-recommends git ca-certificates curl python3 python3-pip \
+  && apt-get install -y --no-install-recommends git ca-certificates curl python3 python3-pip cron \
   && rm -rf /var/lib/apt/lists/* \
   && pip3 install --no-cache-dir --break-system-packages huggingface_hub requests \
   && corepack enable \