Add E2E test into pipeline

What does this MR do and why?

Related issue: https://jihulab.com/gitlab-cn/gitlab/-/issues/3248#note_2669143

• 在 Pipeline 中增加简单的 E2E 测试，验证安装过程和 init sync 命令。
• 在 Jihulab 托管 CI images。

如果早有这个 E2E 测试，#4 (closed) 的问题就可以及时发现。

Screenshots or screen recordings

Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.