for _, envfile := range []string{
		"/.dockerenv",
		"/run/.containerenv",
	} {
		_, err = os.Stat(envfile)
		if err == nil {
			return true
		}
	}
	if osIsNotExist(err) {
		// if none of the files are present we may be running inside
		// CRI-O, Containerd etc..
		// Fallback to our container specific ENVs if they are set.
		return env.IsSet("MINIO_ACCESS_KEY_FILE")
	}

	// than failing with UnknownAPIRequest we simply handle it for now.
	apiRouter.Methods(http.MethodGet).Path(SlashSeparator + SlashSeparator).
		HandlerFunc(s3APIMiddleware(api.ListBucketsHandler))

	// If none of the routes match add default error handler routes
	apiRouter.NotFoundHandler = collectAPIStats("notfound", httpTraceAll(errorResponseHandler))

      "FINE: Q10000 starting              : task",
      "FINE: Q10000 finished run in   0 µs: task",
    )
  }

  /** Inspect how many runnables have been enqueued. If none then we're truly sequential. */
  @Test fun singleQueueIsSerial() {
    redQueue.execute("task one", 100.µs) {
      log += "one:run@${taskFaker.nanoTime} parallel=${taskFaker.isParallel}"
    }

        .build()

    val dohDns = buildCloudflareIp(client)
    val dohEnabledClient =
      client.newBuilder().eventListener(EventListener.NONE).dns(dohDns).build()

    dohEnabledClient.get("https://www.twitter.com/robots.txt")
    dohEnabledClient.get("https://www.facebook.com/robots.txt")
  }

  @Test
  fun testCustomTrustManager() {

nElements:0,_selectedSuggestion:null,_previousTypedVal:null,suggest:function(b,d,e){var f={css:{maxHeight:"150px",background:"#FFF",lineHeight:"150%",textDecoration:"underline",overflowX:"hidden",overflowY:"auto",border:"#CCC solid 1px",borderTop:"none",cursor:"pointer"},activeSuggestionCSS:{background:"#E9E9E9"}},g=function(a,b){var c=b.offset();a.css({width:b.outerWidth(),left:c.left+"px",top:c.top+b.outerHeight()+"px"})};e&&a.extend(f,e),f.css.position="absolute",f.css["z-index"]=9999,b.attr(...

from fastapi import FastAPI

app = FastAPI()


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


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

### Dockerfile

Agora, no mesmo diretório do projeto, crie um arquivo `Dockerfile` com:

```{ .dockerfile .annotate }
# (1)
FROM python:3.9

		// -- Health API --
		adminRouter.Methods(http.MethodGet).Path(adminVersion + "/healthinfo").
			HandlerFunc(adminMiddleware(adminAPI.HealthInfoHandler))
	}

	// If none of the routes match add default error handler routes
	adminRouter.NotFoundHandler = httpTraceAll(errorResponseHandler)
	adminRouter.MethodNotAllowedHandler = httpTraceAll(methodNotAllowedHandler("Admin"))

```

/// dica

O segundo parâmetro em <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> é o valor padrão para o retorno.

Se nenhum valor for informado, `None` é utilizado por padrão, aqui definimos `"World"` como o valor padrão a ser utilizado.

///

E depois você pode executar esse arquivo:

<div class="termy">

```console
// Aqui ainda não definimos a env var

print(f"Hello {name} from Python")
```

/// tip

<a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> 的第二个参数是要返回的默认值。

如果没有提供默认值，默认为 `None`，此处我们提供了 `"World"` 作为要使用的默认值。

///

然后，您可以调用该 Python 程序：

<div class="termy">

```console
// 这里我们还没有设置环境变量
$ python main.py

// 因为我们没有设置环境变量，所以我们得到默认值

Hello World from Python

from fastapi import FastAPI

app = FastAPI()


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


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

### Dockerfile

Erstellen Sie nun im selben Projektverzeichnis eine Datei `Dockerfile` mit:

```{ .dockerfile .annotate }
# (1)
FROM python:3.9