Deploying Python applications used to be a headache. With Docker, it's a breeze.
The Dockerfile
A good multi-stage build is essential for keeping your images small and secure.
# Build stage
FROM python:3.11-slim as builder
WORKDIR /app
COPY requirements.txt .
RUN pip wheel --no-cache-dir --no-deps --wheel-dir /app/wheels -r requirements.txt
# Final stage
FROM python:3.11-slim
WORKDIR /app
COPY --from=builder /app/wheels /wheels
RUN pip install --no-cache /wheels/*
COPY . .
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "80"]Orchestration
Once you have your image, you can deploy it anywhere. AWS Fargate is a great serverless option that scales automatically based on CPU or memory usage.
Combine this with a Load Balancer, and your FastAPI app can handle massive traffic spikes with ease.