Create Dockerfile

Dockerfile

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+# ---------- base image ----------
+FROM python:3.11-slim
+
+# ---------- runtime options ----------
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    LOG_LEVEL=INFO \
+    WORKERS=4         
+
+# ---------- install system deps ----------
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential curl && \
+    rm -rf /var/lib/apt/lists/*
+
+# ---------- install Python deps ----------
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# ---------- copy source ----------
+COPY . .
+
+# ---------- network ----------
+EXPOSE 8000
+
+# ---------- healthcheck ----------
+HEALTHCHECK --interval=30s --timeout=3s --retries=3 CMD \
+  curl -sf http://localhost:8000/health || exit 1
+
+# ---------- start ----------
+CMD ["sh", "-c", "uvicorn main:app --host 0.0.0.0 --port 8000 --workers $WORKERS"]