run seed on ci job

**Is your feature request related to a problem? Please describe.**
When the CI environment gets deployed, I currently need to manually run the db_seed.py script against that environment in order to properly test.

**Describe the solution you'd like**
We should have a github action, or something else, run the seed script automatically.

**Describe alternatives you've considered**
I have not given it much thought yet as to where/what can run the script, besides an action.

**Additional context**
None.

首先找到 db_seed.py，並檢視 CI 環境如何部署。確定 GitHub Action 可以在哪裡針對該環境執行 seed 指令碼，並在 CI 部署期間無需手動介入即可自動完成 seeding 時，將該 issue 視為完成。

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