This reverts commit 6f62c363a6.

#814 Issue fix

* Added phi4 multimodel

- This PR contains a small change that came as pain point for me. It
might help others to get rid of it.
- Here is the
[suggestion](https://github.com/dora-rs/dora/pull/853#discussion_r1993435899)

Make docker image multi platform

Push dora image into GitHub container registry(ghcr)

This PR address issue #837 

**Description of changes**
This PR adds a minimal Dockerfile and accompanying README to help new
users get started with Dora quickly. The Dockerfile includes Python
3.12, Rust, uv package manager, and the latest Dora release, creating a
consistent environment for development without requiring complex setup.

**What problem does this solve?**
New users currently need to install multiple dependencies (Python, Rust,
etc.) to get started with Dora. This Docker setup simplifies onboarding
by providing a pre-configured environment that works across different
platforms.

**Implementation details**
1. Created a docker/minimal directory
2. Added a Dockerfile with all necessary dependencies
3. Included a comprehensive README with build and usage instructions
4. Optimized the Docker image size by using the slim Python base image
and cleaning up after installations

This PR makes it possible to use speakers when talking to an AI through
voice. It is done by filtering out the output of the TTS from the input
of the STT using fuzzy matching.

Setting the variables in bash makes them vulnerable to command
injection. I noticed this in
https://github.com/dora-rs/dora/actions/runs/13792318552/job/38575135851
, which is the CI run for this comment:
https://github.com/dora-rs/dora/pull/838#issuecomment-2714836815

The issue is that the comment contains `main` surrounded by backticks,
which the `bash` shell interprets as a subcommand. So it tries to run a
command named `main`.

Follow-up to https://github.com/dora-rs/dora/pull/840