Update Dockerfile

Dockerfile

@@ -1,16 +1,34 @@
+# ============================================================
+#  Dockerfile — Qwen3.5-0.8B CPU-Only API for HF Spaces
+#  No GPU required. Port 7860.
+# ============================================================
+
 FROM python:3.11-slim
 
-RUN apt-get update && apt-get install -y git && rm -rf /var/lib/apt/lists/*
+# ── System deps ──
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends git && \
+    rm -rf /var/lib/apt/lists/*
 
-# CPU-only torch
-RUN pip install --no-cache-dir torch --index-url https://download.pytorch.org/whl/cpu
+# ── Python deps (CPU-only torch — no CUDA bloat) ──
+RUN pip install --no-cache-dir \
+    torch --index-url https://download.pytorch.org/whl/cpu
 
 RUN pip install --no-cache-dir \
     transformers \
+    accelerate \
     fastapi \
     uvicorn \
-    pydantic
+    pydantic \
+    huggingface_hub
+
+# ── Pre-download model at build time (~1.8 GB baked into image) ──
+ENV HF_HOME=/tmp/hf_cache
+RUN python3 -c "\
+from huggingface_hub import snapshot_download; \
+snapshot_download('Qwen/Qwen3.5-0.8B', cache_dir='/tmp/hf_cache')"
 
+# ── Copy app ──
 WORKDIR /app
 COPY app.py .