Cleanup: remove unused Docker and deploy files

[Okabe-Junya]

Describe your changes

Remove legacy files from Hugo site migration that are not used in this project (cf. #229)

• Dockerfile: Unused, just a template from Docsy theme
• docker-compose.yaml: Unused, too outdated configuration
• deploy.sh: S3 deploy script for different project (bep.is), glossary project uses Netlify

Related issue number or link (ex: resolves #issue-number)

N/A

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• This PR does not contain plagiarism
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[jihoon-seo]

I agree with removing these files.

Separately from this PR, I think it would be nice to provide a local build and test environment as a container manifest (like Dockerfile), as it would free many people from the hassle of installing npm and Hugo and managing versions.

To achieve this, we can refer K8s docs repo:

• https://github.com/kubernetes/website#running-the-website-using-a-container
• https://github.com/kubernetes/website/blob/main/Dockerfile

[Okabe-Junya]

I agree with removing these files.

Separately from this PR, I think it would be nice to provide a local build and test environment as a container manifest (like Dockerfile), as it would free many people from the hassle of installing npm and Hugo and managing versions.

To achieve this, we can refer K8s docs repo:

• https://github.com/kubernetes/website#running-the-website-using-a-container
• https://github.com/kubernetes/website/blob/main/Dockerfile

Thanks, yes, I'll work on this in another PR :)