Refactor: Move hardcoded Docker constants to YAML config file

[yalefresne]

Goal

Refactor the following hardcoded constants into a user-editable configuration file (dvopsctl.yaml) located at ~/.config/dvopsctl.yaml.

Context

These constants are currently hardcoded in commands/docker.go, which limits flexibility for users who may want to use different registries, GitHub organizations, or repository names. Externalizing them into a config file will improve maintainability, portability, and environment-specific customization.

Target Constants

Located in commands/docker.go:

• defaultRegistry = "ghcr.io/mylittleparis"
• defaultGithub = "https://github.com/MyLittleParis"
• defaultRepositoryName = "devops-docker-php"

Acceptance Criteria

• Create or update a config struct to include:

  docker:
    registry: ghcr.io/mylittleparis
    github_url: https://github.com/MyLittleParis
    repository_name: devops-docker-php

• Replace hardcoded constants with values loaded from the config file

• Implement unit tests that:

  • Load and parse the config file correctly

• Update CLI or README documentation to reflect the new config structure

Notes

• Config file path: ~/.config/dvopsctl.yaml
• Use Go standard libraries