!!! tip
    Don't worry if some of these items about **containers**, Docker, or Kubernetes don't make a lot of sense yet.

    I'll tell you more about container images, Docker, Kubernetes, etc. in a future chapter: [FastAPI in Containers - Docker](docker.md){.internal-link target=_blank}.

## Previous Steps Before Starting

const (
	CraneBuilder  = "crane"
	DockerBuilder = "docker"
)

func DefaultArgs() Args {
	// By default, we build all targets
	var targets []string
	_, nonBaseImages, err := ReadPlanTargets()
	if err == nil {
		targets = nonBaseImages
	}
	if legacy, f := os.LookupEnv("DOCKER_TARGETS"); f {
		// Allow env var config. It is a string separated list like "docker.pilot docker.proxy"
		targets = []string{}

		ann  map[string]string
		want string
	}{
		{
			desc: "vals-only-int-tag",
			v:    val("docker.io/istio", 11),
			want: "docker.io/istio/proxyv2:11",
		},
		{
			desc: "pc overrides imageType - float tag",
			v:    val("docker.io/istio", 1.12),
			pc:   pc("distroless"),
			want: "docker.io/istio/proxyv2:1.12-distroless",
		},
		{
			desc: "annotation overrides imageType",

* 起動時の実行
* 再起動
* レプリケーション（実行中のプロセス数）
* メモリー
* 開始前の事前のステップ


## コンテナとDocker
<!-- NOTE: the current version of docker.md is outdated compared to English one.  -->
次章の[コンテナ内のFastAPI - Docker](docker.md){.internal-link target=_blank}では、その他の**デプロイのコンセプト**を扱うために実施するであろう戦略をいくつか紹介します。

また、**GunicornとUvicornワーカー**を含む**公式Dockerイメージ**と、簡単なケースに役立ついくつかのデフォルト設定も紹介します。

	github.com/cyphar/filepath-securejoin v0.2.4 // indirect
	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
	github.com/docker/distribution v2.8.3+incompatible // indirect
	github.com/docker/docker v26.0.2+incompatible // indirect
	github.com/docker/docker-credential-helpers v0.8.1 // indirect
	github.com/emicklei/go-restful/v3 v3.12.0 // indirect
	github.com/envoyproxy/protoc-gen-validate v1.0.4 // indirect

				return err
			}
			// errReadOnlySysFS is caused by a known docker issue (https://github.com/docker/docker/issues/24000),
			// the only remediation we know is to restart the docker daemon.
			// Here we'll send an node event with specific reason and message, the
			// administrator should decide whether and how to handle this issue,
			// whether to drain the node and restart docker.  Occurs in other container runtimes
			// as well.

    //            (__)\       )\/\
    //                ||----w |
    //                ||     ||
    Runnable state = get();
    Blocker blocker = null;
    while (state instanceof Blocker || state == PARKED) {
      if (state instanceof Blocker) {
        blocker = (Blocker) state;
      }
      spinCount++;
      if (spinCount > MAX_BUSY_WAIT_SPINS) {
        /*

	internalLogIf(GlobalContext, err)

	return err == nil
}

// IsDCOS returns true if minio is running in DCOS.
func IsDCOS() bool {
	// http://mesos.apache.org/documentation/latest/docker-containerizer/
	// Mesos docker containerizer sets this value
	return env.Get("MESOS_CONTAINER_NAME", "") != ""
}

// IsKubernetes returns true if minio is running in kubernetes.
func IsKubernetes() bool {

* **云服务** 为您处理此问题
     * 云服务可能**为您处理复制**。 它可能会让您定义 **要运行的进程**，或要使用的 **容器映像**，在任何情况下，它很可能是 **单个 Uvicorn 进程**，并且云服务将负责复制它。



!!! tip

     如果这些关于 **容器**、Docker 或 Kubernetes 的内容还没有多大意义，请不要担心。

     我将在以后的章节中向您详细介绍容器镜像、Docker、Kubernetes 等：[容器中的 FastAPI - Docker](docker.md){.internal-link target=_blank}。

## 启动之前的步骤

在很多情况下，您希望在**启动**应用程序之前执行一些步骤。

例如，您可能想要运行**数据库迁移**。

但在大多数情况下，您只想执行这些步骤**一次**。

    //            (__)\       )\/\
    //                ||----w |
    //                ||     ||
    Runnable state = get();
    Blocker blocker = null;
    while (state instanceof Blocker || state == PARKED) {
      if (state instanceof Blocker) {
        blocker = (Blocker) state;
      }
      spinCount++;
      if (spinCount > MAX_BUSY_WAIT_SPINS) {
        /*