Update Dockerfile

Dockerfile

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+FROM python:3.10-slim
+
+# ---- HF-required environment ----
+ENV PYTHONUNBUFFERED=1 \
+    PORT=7860
+
+# ---- System deps ----
+RUN apt-get update && apt-get install -y \
+    git \
+    build-essential \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# ---- Create non-root user (MANDATORY for HF) ----
+RUN useradd -m -u 1000 user
+
+# ---- App directory ----
+WORKDIR /home/user/app
+
+# ---- Copy project files ----
+COPY . .
+
+# ---- Fix permissions ----
+RUN chown -R user:user /home/user/app
+
+# ---- Switch to non-root ----
+USER user
+
+# ---- Python deps (CPU-safe) ----
+RUN pip install --no-cache-dir --upgrade pip && \
+    pip install --no-cache-dir \
+        fastapi \
+        uvicorn \
+        transformers \
+        sentencepiece \
+        llama-cpp-python \
+        psutil
+
+# ---- HF ONLY exposes this port ----
+EXPOSE 7860
+
+# ---- RUN app.py (THIS IS THE FIX) ----
+CMD ["python", "app.py"]