Update Dockerfile

Dockerfile

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+# ----------------------------
+# Stage 1: Builder
+# ----------------------------
+FROM python:3.12-slim AS builder
+
+WORKDIR /app
+
+# Install only what is needed for building wheels
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    gcc \
+    libgl1 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy dependencies file
+COPY requirements.txt .
+
+# Install dependencies into a temporary folder
+RUN pip install --upgrade pip && \
+    pip install --prefix=/install --no-cache-dir -r requirements.txt
+
+# Copy source
+COPY . .
+
+# ----------------------------
+# Stage 2: Runtime (minimal size)
+# ----------------------------
+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Install minimal runtime libraries only
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libgl1 \
+    libglib2.0-0 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy only installed python deps
+COPY --from=builder /install /usr/local
+
+# Copy only application code (not build deps)
+COPY --from=builder /app /app
+
+# Reduce Python overhead
+ENV PYTHONUNBUFFERED=1
+ENV PYTHONDONTWRITEBYTECODE=1
+
+EXPOSE 7860
+
+# Use multiple workers in a lightweight way
+CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]