Containerized controller

[enhaut]

Description

• updated lnst contributors
• moved agent's container files to container_files/agent
• added support for running controller in container so you don't need to install
  lnst dependencies locally.

Tests

I am using it and it works as expected.

[Axonis]

For the sake of consistency and reusability I'd like to see multistage build for the dockerfiles.
E.g. Using F39 in agent and F41 in controller can produce some weird results.

[enhaut]

For the sake of consistency and reusability I'd like to see multistage build for the dockerfiles. E.g. Using F39 in agent and F41 in controller can produce some weird results.

I wanted to avoid muti stage build as it requires all the stages to be in a single file. So user would need to build all the stages - "base", agent and controller.

Splitting it into multiple files with base - agent/controller dependency requires user to build both base and agent/controller containers separately, and that's again something I wanted to avoid as I am using it, and I am kinda lazy to rebuild 2 containers :)