Update Dockerfile

Dockerfile

@@ -1,40 +1,20 @@
-# =============================================
-# Stage 1: Builder
-# =============================================
-FROM python:3.11-slim AS builder
+# Use official Python image
+FROM python:3.9-slim
 
+# Set working directory
 WORKDIR /app
 
-# Install build dependencies
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    gcc \
-    && rm -rf /var/lib/apt/lists/*
-
-# Copy and install Python deps
+# Copy requirements first to leverage Docker cache
 COPY requirements.txt .
-RUN pip install --no-cache-dir --user -r requirements.txt
-
-# =============================================
-# Stage 2: Final Runtime
-# =============================================
-FROM python:3.11-slim
 
-WORKDIR /app
+# Install dependencies
+RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy installed packages from builder
-COPY --from=builder /root/.local /root/.local
-ENV PATH=/root/.local/bin:$PATH
-
-# Copy app
+# Copy application code
 COPY main.py .
 
-# Enable unbuffered output
-ENV PYTHONUNBUFFERED=1
-
-# Expose FastAPI port
+# Expose the port
 EXPOSE 8000
 
-# =============================================
-# Auto-detect CPU cores and set Uvicorn workers
-# =============================================
-CMD ["sh", "-c", "uvicorn main:app --host 0.0.0.0 --port 8000 --workers $(( $(nproc) * 2 ))"]
+# Run the application
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]