【Docker × FastAPI 】uvicornの起動方法について

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uvicorn app.asgi:app --reload --host 0.0.0.0 --port 8000

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import uvicorn
from uvicorn_config import config

if __name__ == "__main__":    
    # uvicorn起動
    uvicorn.run(
        "asgi:app",
        host="0.0.0.0",
        port=8000,
        reload=True,
    )

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.
|-- app
|   |-- __init__.py
|   |-- asgi.py
|   |-- endpoints.py
|   `-- main.py
|-- docker-compose.yml
|-- dockerfile
`-- requirements.txt

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fastapi==0.115.6
uvicorn[standard]==0.34.0

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FROM python:3.12

# PYTHONPATHの設定
ENV PYTHONPATH=/workspace/app

# workspaceディレクトリ作成、移動
WORKDIR /workspace

# プロジェクトディレクトリにコピー
COPY requirements.txt /workspace

# 必要パッケージのインストール
RUN pip install --upgrade pip
RUN pip install -r requirements.txt

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version: "3"
services:
  uvicorn-start:
    container_name: "uvicorn-start"
    build:
      context: .
      dockerfile: Dockerfile
    volumes:
      - .:/workspace
    tty: true
    ports:
      - 8000:8000 # ホストマシンのポート8000を、docker内のポート8000に接続する
    # command:
    #   ["uvicorn", "asgi:app", "--reload", "--host", "0.0.0.0", "--port", "8000"]

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from fastapi import FastAPI
import logging

import endpoints as endpoints

def create_app():
    # アプリケーションインスタンスの作成
    app = FastAPI()
    # ルーティング設定
    app.include_router(endpoints.router)

    return app

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from main import create_app

app = create_app()

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import logging
from fastapi import APIRouter
from fastapi.responses import JSONResponse

router = APIRouter()

# ディクショナリ
users = [
    {"user_id": "1", "name": "Tujimura", "age": 11},
    {"user_id": "2", "name": "mori", "age": 20},
    {"user_id": "3", "name": "shimada", "age": 501},
    {"user_id": "4", "name": "kyogoku", "age": 70}
]

# ユーザー一覧を取得
@router.get("/")
async def get_users():
    return JSONResponse(status_code=211, content=users)

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$ docker compose up -d
$ docker ps
CONTAINER ID   IMAGE                                         COMMAND                   CREATED          STATUS          PORTS                    NAMES
9e575d48ad46   fastapi_uvicorn_start_pattern-uvicorn-start   "uvicorn asgi:app --…"   21 seconds ago   Up 14 seconds   0.0.0.0:8000->8000/tcp   uvicorn-start

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$ docker exec -it uvicorn-start sh
#

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$ docker exec -it uvicorn-start sh
# 起動
# uvicorn asgi:app --reload --host 0.0.0.0 --port 8000
INFO:     Will watch for changes in these directories: ['/workspace']
INFO:     Uvicorn running on http://0.0.0.0:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [13] using WatchFiles
INFO:     Started server process [15]
INFO:     Waiting for application startup.
INFO:     Application startup complete.

# 停止
^CINFO:     Shutting down
INFO:     Waiting for application shutdown.
INFO:     Application shutdown complete.
INFO:     Finished server process [20]
INFO:     Stopping reloader process [18]

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$ curl -i -X GET http://localhost:8000
HTTP/1.1 211 
date: Sat, 22 Feb 2025 15:42:18 GMT
server: uvicorn
content-length: 168
content-type: application/json

[{"user_id":"1","name":"Tujimura","age":11},{"user_id":"2","name":"mori","age":20},{"user_id":"3","name":"shimada","age":501},{"user_id":"4","name":"kyogoku","age":70}]

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{
    "version": "2.0.0",
    "tasks": [
        {
            "label": "Run Uvicorn",
            "type": "process",
            "command": "uvicorn",
            "args": [
                "asgi:app",
                "--reload",
                "--host",
                "0.0.0.0",
                "--port",
                "8000"
            ],
            "problemMatcher": [],
            "group": {
                "kind": "build",
                "isDefault": true
            }
        }
    ]
}

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.
|-- app
|   |-- __init__.py
|   |-- asgi.py
|   |-- endpoints.py
|   `-- main.py
|-- docker-compose.yml
|-- dockerfile
|-- requirements.txt
|-- start_uvicorn.py
`-- uvicorn_config.py

Copy
fastapi==0.115.6
uvicorn[standard]==0.34.0

Copy
FROM python:3.12

# PYTHONPATHの設定
ENV PYTHONPATH=/workspace/app

# workspaceディレクトリ作成、移動
WORKDIR /workspace

# プロジェクトディレクトリにコピー
COPY requirements.txt /workspace

# 必要パッケージのインストール
RUN pip install --upgrade pip
RUN pip install -r requirements.txt

Copy
version: "3"
services:
  uvicorn-start:
    container_name: "uvicorn-start"
    build:
      context: .
      dockerfile: Dockerfile
    volumes:
      - .:/workspace
    tty: true
    ports:
      - 8000:8000 # ホストマシンのポート8000を、docker内のポート8000に接続する
    entrypoint: ["python", "start_uvicorn.py"]

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# uvicorn起動設定
config = {
    "host": "0.0.0.0",
    "port": 8000,
    "reload": True,
    "log_level": "info"
}

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import uvicorn
from uvicorn_config import config

if __name__ == "__main__":    
    # uvicorn起動
    uvicorn.run(
        "asgi:app",
        host=config["host"],
        port=config["port"],
        reload=config["reload"]
    )

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$ docker compose up -d
$ docker ps
CONTAINER ID   IMAGE                                         COMMAND                   CREATED          STATUS          PORTS                    NAMES
3fcab9cdd99d   fastapi_uvicorn_start_pattern-uvicorn-start   "python start_uvicor…"   44 seconds ago   Up 38 seconds   0.0.0.0:8000->8000/tcp   uvicorn-start

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$ docker logs uvicorn-start
INFO:     Will watch for changes in these directories: ['/workspace']
INFO:     Uvicorn running on http://0.0.0.0:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [1] using WatchFiles
INFO:     Started server process [8]
INFO:     Waiting for application startup.
INFO:     Application startup complete.

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$ curl -i -X GET http://localhost:8000
HTTP/1.1 211 
date: Mon, 24 Feb 2025 13:08:30 GMT
server: uvicorn
content-length: 168
content-type: application/json

[{"user_id":"1","name":"Tujimura","age":11},{"user_id":"2","name":"mori","age":20},{"user_id":"3","name":"shimada","age":501},{"user_id":"4","name":"kyogoku","age":70}]