【Python】Docker で FastAPI の開発環境を構築する

$ mkdir rails-app
$ cd rails-app

FROM python:3.11-slim

WORKDIR /app

COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade -r /app/requirements.txt

COPY . /app

CMD ["uvicorn", "main:app", "--reload", "--host", "0.0.0.0"]

services:
  web:
    build: .
    command: uvicorn main:app --reload --host 0.0.0.0
    volumes:
      - .:/app
    ports:
      - 8000:8000

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
def read_root():
    return { "message": "Hello World!" }

fastapi
uvicorn[standard]

$ docker compose build
$ docker compose up

$ curl localhost:8000
{"message":"Hello World!"}

__pycache__/