## Get started

### 1. Start OPA in a container

```sh
podman run -it \
    --name opa \
    --publish 8181:8181 \
    docker.io/openpolicyagent/opa:0.40.0-rootless \
       run --server \
           --log-format=json-pretty \
           --log-level=debug \
           --set=decision_logs.console=true
```

### 2. Create a sample OPA Policy

```

</div>

...或任何其他 ASGI 服务器。

////

## 运行服务器程序

您可以按照之前教程中的相同方式运行应用程序，但不使用`--reload`选项，例如：

//// tab | Uvicorn

<div class="termy">

```console
$ uvicorn main:app --host 0.0.0.0 --port 80

<span style="color: green;">INFO</span>:     Uvicorn running on http://0.0.0.0:80 (Press CTRL+C to quit)
```

</div>

////

//// tab | Hypercorn

<div class="termy">

```console

    assertThat(
            max((double) 8, (double) 6, (double) 7, (double) 5, (double) 3, (double) 0, (double) 9))
        .isEqualTo((double) 9);

    assertThat(max(-0.0, 0.0)).isEqualTo(0.0);
    assertThat(max(0.0, -0.0)).isEqualTo(0.0);
    assertThat(max(NUMBERS)).isEqualTo(GREATEST);
    assertThat(Double.isNaN(max(VALUES))).isTrue();
  }

  @GwtIncompatible
  public void testMin_noArgs() {

    assertThat(
            max((double) 8, (double) 6, (double) 7, (double) 5, (double) 3, (double) 0, (double) 9))
        .isEqualTo((double) 9);

    assertThat(max(-0.0, 0.0)).isEqualTo(0.0);
    assertThat(max(0.0, -0.0)).isEqualTo(0.0);
    assertThat(max(NUMBERS)).isEqualTo(GREATEST);
    assertThat(Double.isNaN(max(VALUES))).isTrue();
  }

  @GwtIncompatible
  public void testMin_noArgs() {

        this.maxSetupCount = 0;
    }


    @Override
    protected int writeSetupWireFormat ( byte[] dst, int dstIndex ) {
        dst[ dstIndex++ ] = this.getSubCommand();
        dst[ dstIndex++ ] = (byte) 0x00;
        return 2;
    }


    @Override
    protected int writeParametersWireFormat ( byte[] dst, int dstIndex ) {
        int start = dstIndex;

```mermaid
graph LR

browser("Browser")
proxy["Proxy on http://0.0.0.0:9999/api/v1/app"]
server["Server on http://127.0.0.1:8000/app"]

browser --> proxy
proxy --> server
```

/// tip

📢 `0.0.0.0` 🛎 ⚙️ ⛓ 👈 📋 👂 🔛 🌐 📢 💪 👈 🎰/💽.

///

🩺 🎚 🔜 💪 🗄 🔗 📣 👈 👉 🛠️ `server` 🔎 `/api/v1` (⛅ 🗳). 🖼:

```JSON hl_lines="4-8"
{
    "openapi": "3.0.2",
    // More stuff here
    "servers": [

    assertEscaping(e, "%7F", '\u007f'); // del
    assertEscaping(e, "%C2%80", '\u0080'); // xx-00010,x-000000
    assertEscaping(e, "%DF%BF", '\u07ff'); // xx-11111,x-111111
    assertEscaping(e, "%E0%A0%80", '\u0800'); // xxx-0000,x-100000,x-00,0000
    assertEscaping(e, "%EF%BF%BF", '\uffff'); // xxx-1111,x-111111,x-11,1111
    assertUnicodeEscaping(e, "%F0%90%80%80", '\uD800', '\uDC00');
    assertUnicodeEscaping(e, "%F4%8F%BF%BF", '\uDBFF', '\uDFFF');

If you installed an ASGI server manually, you would normally need to pass an import string in a special format for it to import your FastAPI application:

<div class="termy">

```console
$ uvicorn main:app --host 0.0.0.0 --port 80

<span style="color: green;">INFO</span>:     Uvicorn running on http://0.0.0.0:80 (Press CTRL+C to quit)
```

</div>

/// note

The command `uvicorn main:app` refers to:

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

COPY ./app /code/app

CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "80"]

# If running behind a proxy like Nginx or Traefik add --proxy-headers
# CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "80", "--proxy-headers"]
```

</details>

## O que é um Contêiner

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

COPY ./app /code/app

CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "80"]

# Wenn Sie hinter einem Proxy wie Nginx oder Traefik sind, fügen Sie --proxy-headers hinzu
# CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "80", "--proxy-headers"]
```

</details>

## Was ist ein Container?