[🚀 Feature]: Migrate to S6 overlay from Supervisord

[VietND96]

Feature and motivation

Following few articles

S6-overlay is a container-focused process manager that offers end-to-end management of the container's lifecycle, from initialization to graceful shutdown. Its innovative design and feature set make it a compelling alternative to other process managers, such as supervisors

• https://github.com/just-containers/s6-overlay
• https://ahmet.im/blog/minimal-init-process-for-containers/
• https://platformengineers.io/blog/s6-overlay-quickstart/

Evaluate the pros and bring S6 overlay to current containers.

Usage example

Changes in container's processes in background, there is no impact for end-user experience