Use GitHub Actions to auto-update

[KEINOS]

Use GitHub Actions' cron to update the built image

Due to changes in Docker's terms of service, free use of Automated Build is now limited.

This is true even for public repositories, and if we want to continue using them for free, we must apply to use them as an OSS organization and have the repos reviewed.

In the meantime, we should consider using GitHub Actions.

1. Monitor the latest version of SQLite3 via GitHub Actions' scheduled workflow(cron)
2. On change found rebuild the container image and push it to both DockerHub and GitHub Registry.