```console
// Use the command "serve" after running "build-all"
$ python ./scripts/docs.py serve

Warning: this is a very simple server. For development, use mkdocs serve instead.
This is here only to preview a site with translations already built.
Make sure you run the build-all command first.
Serving at: http://127.0.0.1:8008
```

</div>

## 💯

📤 ✍ 👈 👆 💪 🏃 🌐 💯 🌐 📟 &amp; 🏗 💰 📄 🕸:

    .fastFallback(true)
    .build();
```

 *  New: Change the build from Kotlin-JVM to Kotlin-multiplatform (which includes JVM). Both
    native and JavaScript platforms are unstable preview releases and subject to
    backwards-incompatible changes in forthcoming releases.
 *  Fix: Don't crash loading the public suffix database resource in obfuscated builds.

 *  Fix: Change the return type of `MockWebServer.takeRequest()` to be nullable.
 *  Fix: Make `Call.clone()` public to Kotlin callers.


## Version 4.0.0-RC1

_2019-06-03_

 *  First stable preview of OkHttp 4.


## Version 3.x

[Change log](https://square.github.io/okhttp/changelog_3x/)


 [bom]: https://docs.gradle.org/6.2/userguide/platforms.html#sub:bom_import

!!! tip
    In a hurry and already know this stuff? Jump to the [`Dockerfile` below 👇](#build-a-docker-image-for-fastapi).

<details>
<summary>Dockerfile Preview 👀</summary>

```Dockerfile
FROM python:3.9

WORKDIR /code

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

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

COPY ./app /code/app

install.istio.io/v1alpha1 kind: IstioOperator spec: components: base: enabled: false pilot: enabled: false ingressGateways: - name: istio-ingressgateway enabled: false istiodRemote: enabled: true values: profile: remote manifests/profiles/preview.yaml # The preview profile contains features that are experimental. # This is intended to explore new features coming to Istio. # Stability, security, and performance are not guaranteed - use at your own risk. apiVersion: install.istio.io/v1alpha1 kind: IstioOperator...

* Update GitHub Actions, use commit from PR for docs preview, not commit from pre-merge. PR [#1761](https://github.com/tiangolo/fastapi/pull/1761).
* Update GitHub Actions, refactor Gitter bot. PR [#1746](https://github.com/tiangolo/fastapi/pull/1746).

## 0.60.0

* Add GitHub Action to watch for missing preview docs and trigger a preview deploy. PR [#1740](https://github.com/tiangolo/fastapi/pull/1740).

使用 Linux 容器有几个优点，包括**安全性**、**可复制性**、**简单性**等。

!!! tip
    赶时间并且已经知道这些东西了？ 跳转到下面的 [`Dockerfile` 👇](#fastapi-docker_1)。


<details>
<summary>Dockerfile Preview 👀</summary>

```Dockerfile
FROM python:3.9

WORKDIR /code

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

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

COPY ./app /code/app

automations:

  # Add a label that indicates how many minutes it will take to review the PR and categorizes it
  estimated_time_to_review:
    if:
      - {{ ('estimated_time_to_review' | isEnabledAutomation(pr)) }}
    run:
      - action: add-label@v1
        # etr is defined in the last section of this example
        args:
          label: "{{ calc.etr }} min review"

  * Plugins

      * Introduces the ability to extend kubectl by adding third-party plugins. Developer preview, please refer to the documentation for instructions about how to use it. ([#37499](https://github.com/kubernetes/kubernetes/pull/37499), [@fabianofranz](https://github.com/fabianofranz))

            commenters[author_name] += 1
        for review in pr.reviews.nodes:
            if review.author:
                authors[review.author.login] = review.author
                pr_reviewers.add(review.author.login)
                for label in pr.labels.nodes:
                    if label.name == "lang-all":
                        translation_reviewers[review.author.login] += 1
                        break