如果你有**多个容器**，可能每个容器运行一个**单独进程**（例如在 **Kubernetes** 集群中），那么你可能希望使用一个**单独的容器**来执行**前置步骤**，在一个容器中运行一个进程，**在**启动那些复制的 worker 容器**之前**完成。

/// info | 信息

如果你使用 Kubernetes，这通常会是一个 [Init Container](https://kubernetes.io/docs/concepts/workloads/pods/init-containers/)。

///

如果在你的用例中，**并行多次**运行这些前置步骤没有问题（例如你不是在跑数据库迁移，而只是检查数据库是否就绪），那么你也可以把这些步骤放在每个容器中，在启动主进程之前执行。

### 单个容器 { #single-container }

/// info | Інформація

Якщо ви використовуєте Kubernetes, це, ймовірно, буде [Init Container](https://kubernetes.io/docs/concepts/workloads/pods/init-containers/).

///

        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)`

        if (ScopeUtil.isInInterfaceOrAnnotationBlock(ast)) {
            customScope = Scope.PUBLIC;
        } else {
            final DetailAST mods = ast.findFirstToken(TokenTypes.MODIFIERS);
            customScope = ScopeUtil.getScopeFromMods(mods);
        }
        final Scope surroundingScope = ScopeUtil.getSurroundingScope(ast);

        final String outerTypeName = ast.findFirstToken(TokenTypes.IDENT).getText();

application/vnd.ms-powerpoint=powerpoint\n\
application/vnd.openxmlformats-officedocument.presentationml.presentation=powerpoint\n\
application/vnd.oasis.opendocument.text=odt\n\
application/vnd.oasis.opendocument.spreadsheet=ods\n\
application/vnd.oasis.opendocument.presentation=odp\n\
application/pdf=pdf\n\
application/x-fictionbook+xml=fb2\n\
application/e-pub+zip=epub\n\
application/x-ibooks+zip=ibooks\n\
text/plain=txt\n\

     * application/vnd.openxmlformats-officedocument.presentationml.presentation=powerpoint<br>
     * application/vnd.oasis.opendocument.text=odt<br>
     * application/vnd.oasis.opendocument.spreadsheet=ods<br>
     * application/vnd.oasis.opendocument.presentation=odp<br>
     * application/pdf=pdf<br>
     * application/x-fictionbook+xml=fb2<br>
     * application/e-pub+zip=epub<br>

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