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    FastAPI Dockerfile for Oracle Cloud ARM

    Uvicorn workers behind Caddy on an ARM VM — async APIs, WebSockets and background tasks that never sleep. Built for Ampere A1 (arm64), listens on port 8000, and starts with uvicorn app.main:app --host 0.0.0.0 --port 8000.

    Dockerfile
    FROM python:3.12-slim
WORKDIR /app
ENV PYTHONUNBUFFERED=1
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt "uvicorn[standard]"
COPY . .
EXPOSE 8000
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "2"]

    ARM notes for FastAPI

    uvloop and httptools both ship aarch64 wheels, so the standard extras install cleanly on Ampere. Long-lived WebSocket connections are the big win over serverless: nothing terminates the process between requests.

    Skip the build, network and TLS setup

    Cheaploy builds this image on your own Oracle Always Free VM, opens the ports, issues HTTPS and rolls back if health checks fail.

    Deploy FastAPI Full FastAPI guide

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