fix: update Dockerfile to use poetry for dependency management

[GoGiants1]

Pull Request

설명

#106 을 dev로 머지할 때, 도커 파일에 poetry 설치 커맨드가 누락되었음. 다시 버전 고정해서 추가함.

어떤 종류의 PR인가요?

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

테스트는 어떤 방식으로 진행하셨나요?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Unit Test with pytest
• Integration Test with pytest
• Manual Test

체크리스트

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules