chore(deps): update postgres docker tag to v13.18

[renovate]

This PR contains the following updates:

Package	Update	Change
postgres	minor	13.17-alpine -> 13.18-alpine

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[fit2cloudrd]

您提供的代码没有明显的错误或问题，看起来是正确的配置设置。这是一个基本的Dockerfile模板，并遵循了容器构建的最佳实践。如果您需要进一步的帮助，请详细说明您的特定需求和预期行为。