Feature Request: Docker Build for AdGuard DNS Client

### Prerequisites

- [X] I have checked the [Knowledge Base](https://adguard-dns.io/kb/) and the [Discussions](https://github.com/AdguardTeam/AdGuardDNSClient/discussions) and found no answer

- [X] I have searched other issues and found no duplicates

- [X] I want to request a feature or enhancement and not ask a question

### The problem

Currently, users must manually install the AdGuard DNS Client and handle dependencies and configuration, which can be cumbersome, especially in environments where containers are preferred for isolation and ease of deployment.

### Proposed solution

Providing an official Docker build for the AdGuard DNS Client would simplify the installation and execution process. Users could easily pull a pre-built image from a container registry, ensuring consistent environments and reducing the need for manual setup.

### Alternatives considered and additional information

An official Docker image would streamline deployment in containerized workflows, such as Docker Compose or Kubernetes. A Dockerfile based on a lightweight image like Alpine could be added to the repository, alongside documentation for usage.