複数の**コンテナ**があり、おそらくそれぞれが**単一のプロセス**を実行している場合（**Kubernetes**クラスタなど）、レプリケートされたワーカーコンテナを実行する**前に**、単一のコンテナで**事前のステップ**の作業を行う**別のコンテナ**を持ちたいと思うでしょう。

/// info

もしKubernetesを使用している場合, これはおそらく<a href="https://kubernetes.io/docs/concepts/workloads/pods/init-containers/" class="external-link" target="_blank">Init コンテナ</a>でしょう。

///

ユースケースが事前のステップを**並列で複数回**実行するのに問題がない場合（例：データベースの準備チェック）、メインプロセスを開始する前に、それらのステップを各コンテナに入れることが可能です。

### 単一コンテナ

    <glob pattern="*.sdp"/>
  </mime-type>

  <mime-type type="application/sereal">
    <_comment>Sereal binary serialization format</_comment>
    <tika:link>https://github.com/Sereal/Sereal/blob/master/sereal_spec.pod</tika:link>
    <glob pattern="*.srl"/>
  </mime-type>
  <mime-type type="application/sereal;version=1">
    <sub-class-of type="application/sereal"/>
    <magic priority="50">

pkg syscall (openbsd-386), type IfMsghdr struct, Index uint16
pkg syscall (openbsd-386), type IfMsghdr struct, Msglen uint16
pkg syscall (openbsd-386), type IfMsghdr struct, Pad1 uint8
pkg syscall (openbsd-386), type IfMsghdr struct, Pad2 uint8
pkg syscall (openbsd-386), type IfMsghdr struct, Tableid uint16
pkg syscall (openbsd-386), type IfMsghdr struct, Type uint8

pkg syscall (freebsd-arm64), type Dirent struct, Namlen uint16
pkg syscall (freebsd-arm64), type Dirent struct, Off int64
pkg syscall (freebsd-arm64), type Dirent struct, Pad0 uint8
pkg syscall (freebsd-arm64), type Dirent struct, Pad1 uint16
pkg syscall (freebsd-arm64), type Dirent struct, Reclen uint16
pkg syscall (freebsd-arm64), type Dirent struct, Type uint8
pkg syscall (freebsd-arm64), type FdSet struct

        multiple of the number of replicas.
    *   `tf.data.Dataset` now supports automatic data distribution and sharding
        in distributed environments, including on TPU pods.
    *   Distribution policies for `tf.data.Dataset` can now be tuned with 1.
        `tf.data.experimental.AutoShardPolicy(OFF, AUTO, FILE, DATA)` 2.
        `tf.data.experimental.ExternalStatePolicy(WARN, IGNORE, FAIL)`

pkg syscall (freebsd-riscv64), type Dirent struct, Off int64 #53466
pkg syscall (freebsd-riscv64), type Dirent struct, Pad0 uint8 #53466
pkg syscall (freebsd-riscv64), type Dirent struct, Pad1 uint16 #53466
pkg syscall (freebsd-riscv64), type Dirent struct, Reclen uint16 #53466
pkg syscall (freebsd-riscv64), type Dirent struct, Type uint8 #53466
pkg syscall (freebsd-riscv64), type FdSet struct #53466

1FAD0..1FAD6  ; valid                  ;      ; NV8    # 13.0 BLUEBERRIES..TEAPOT
1FAD7..1FAD9  ; valid                  ;      ; NV8    # 14.0 POURING LIQUID..JAR
1FADA..1FADB  ; valid                  ;      ; NV8    # 15.0 GINGER ROOT..PEA POD
1FADC..1FADF  ; disallowed                             # NA   <reserved-1FADC>..<reserved-1FADF>
1FAE0..1FAE7  ; valid                  ;      ; NV8    # 14.0 MELTING FACE..BUBBLES