ci: Added a workflow for building the Docker Image.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (c558b44) 3.16% compared to head (cc13037) 3.16%. Report is 3 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #22 +/- ## ===================================== Coverage 3.16% 3.16% ===================================== Files 11 11 Lines 379 379 Branches 27 27 ===================================== Hits 12 12 Misses 367 367 ``` | [Flag](https://app.codecov.io/gh/real-zony/AliDDNSNet/pull/22/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Zony) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/real-zony/AliDDNSNet/pull/22/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Zony) | `3.16% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Zony#carryforward-flags-in-the-pull-request-comment) to find out more.

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