Add Docker image build and publish automation

[Ulthran]

Summary

• add a Dockerfile that installs seqBackup and exposes the backup_illumina CLI
• create a GitHub Actions workflow to build and push the Docker image to Docker Hub

Testing

• pytest

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https://chatgpt.com/codex/tasks/task_e_68dec6a988f8832385d47dc80e8f1570

[Copilot]

Pull Request Overview

This PR adds Docker containerization for the seqBackup application, enabling easier deployment and distribution. The changes include a Dockerfile to package the application and a GitHub Actions workflow to automate Docker image building and publishing.

• Creates a Dockerfile that installs seqBackup and exposes the backup_illumina CLI
• Adds GitHub Actions workflow for automated Docker image building and publishing to Docker Hub

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
Dockerfile	Defines Docker image build process with Python 3.11 base and seqBackup installation
.github/workflows/docker-publish.yml	Automates Docker image building and publishing to Docker Hub on main/master branch pushes

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