Update Dockerfile

Dockerfile

@@ -1,16 +1,30 @@
-FROM python:3.10
-
-# Copy all files
-COPY . .
-
-# Set working directory
-WORKDIR /
-
-# Install dependencies
-RUN pip install --no-cache-dir --upgrade -r requirements.txt
-
-# Expose port 7860 (HF Spaces default)
-EXPOSE 7860
-
-# Start FastAPI on port 7860
-CMD ["uvicorn", "api_backend:app", "--host", "0.0.0.0", "--port", "7860"]
+FROM python:3.10-slim
+
+# Set working directory
+WORKDIR /app
+
+# Environment sanity
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    git \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements first (better caching)
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir --upgrade pip \
+    && pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# HF Spaces port
+EXPOSE 7860
+
+# Start FastAPI
+CMD ["uvicorn", "api_backend:app", "--host", "0.0.0.0", "--port", "7860"]