// Sample bucket notification.
	bucketNotificationBuf := `<NotificationConfiguration><QueueConfiguration><Event>s3:ObjectCreated:Put</Event><Filter><S3Key><FilterRule><Name>prefix</Name><Value>images/</Value></FilterRule></S3Key></Filter><Id>1</Id><Queue>arn:minio:sqs:us-east-1:444455556666:webhook</Queue></QueueConfiguration></NotificationConfiguration>`
	// generate a random bucket Name.
	bucketName := getRandomBucketName()

👆 🔜 👀 👆 🩺 ✅ "⏲" 📄 👆 *➡ 🛠️* 👈 🎦 ❔ *🔢 🛠️* 🔜 👀 💖:

d=a(this),e=document.createElement("DIV"),f=c.reCaptchaSiteKey||d.valAttr("recaptcha-sitekey"),g=c.reCaptchaTheme||d.valAttr("recaptcha-theme")||"light",h=c.reCaptchaSize||d.valAttr("recaptcha-size")||"normal",i=c.reCaptchaType||d.valAttr("recaptcha-type")||"image";if(!f)throw new Error("Google reCaptcha site key is required.");var j=grecaptcha.render(e,{sitekey:f,theme:g,size:h,type:i,callback:function(a){b.find('[data-validation~="recaptcha"]').trigger("validation",a&&""!==a)},"expired-callback":function(...

	github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f // indirect
	github.com/onsi/ginkgo/v2 v2.20.2 // indirect
	github.com/opencontainers/go-digest v1.0.0 // indirect
	github.com/opencontainers/image-spec v1.1.0 // indirect
	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
	github.com/pkg/errors v0.9.1 // indirect

```Python hl_lines="19"
{!> ../../docs_src/dependencies/tutorial003.py!}
```

////

但是声明类型是被鼓励的，因为那样你的编辑器就会知道将传递什么作为参数 `commons` ，然后它可以帮助你完成代码，类型检查，等等：

<img src="/img/tutorial/dependencies/image02.png">

## 快捷方式

但是您可以看到，我们在这里有一些代码重复了，编写了`CommonQueryParams`两次：

```Python
commons: CommonQueryParams = Depends(CommonQueryParams)
```

Ich werde Ihnen in einem zukünftigen Kapitel mehr über Container-Images, Docker, Kubernetes, usw. erzählen: [FastAPI in Containern – Docker](docker.md){.internal-link target=_blank}.

///

## Schritte vor dem Start

Es gibt viele Fälle, in denen Sie, **bevor Sie Ihre Anwendung starten**, einige Schritte ausführen möchten.

### `UploadFile`

`UploadFile` 은 다음과 같은 어트리뷰트가 있습니다:

* `filename` : 문자열(`str`)로 된 업로드된 파일의 파일명입니다 (예: `myimage.jpg`).
* `content_type` : 문자열(`str`)로 된 파일 형식(MIME type / media type)입니다 (예: `image/jpeg`).

///

## 🛠️ ⏮️ 🗄

🌐 📨 📄, 🔬 & 📄 👆 🔗 (& 🎧-🔗) 🔜 🛠️ 🎏 🗄 🔗.

, 🎓 🩺 🔜 ✔️ 🌐 ℹ ⚪️➡️ 👫 🔗 💁‍♂️:

<img src="/img/tutorial/dependencies/image01.png">

## 🙅 ⚙️

🚥 👆 👀 ⚫️, *➡ 🛠️ 🔢* 📣 ⚙️ 🕐❔ *➡* &amp; *🛠️* 🏏, &amp; ⤴️ **FastAPI** ✊ 💅 🤙 🔢 ⏮️ ☑ 🔢, ❎ 📊 ⚪️➡️ 📨.

🤙, 🌐 (⚖️ 🏆) 🕸 🛠️ 👷 👉 🎏 🌌.

리눅스 컨테이너를 사용하는 데에는 **보안**, **반복 가능성**, **단순함** 등의 장점이 있습니다.

/// tip | "팁"

시간에 쫓기고 있고 이미 이런것들을 알고 있다면 [`Dockerfile`👇](#build-a-docker-image-for-fastapi)로 점프할 수 있습니다.

///

<details>
<summary>도커파일 미리보기 👀</summary>

```Dockerfile
FROM python:3.9

WORKDIR /code

COPY ./requirements.txt /code/requirements.txt

You will see your docs including a "Callbacks" section for your *path operation* that shows how the *external API* should look like: