Added Elixir images

[avoxmr]

Description

Added Elixir Egg.

All Submissions:

• [X] Have you ensured there aren't other open Pull Requests for the same update or change?
• [X] Have you created a new branch for your changes and PR from that branch and not from your master branch?

New Image Submissions:

1. [X] Have you added your image to the Github workflows?
2. [X] Have you updated the README list to contain your new image?

[QuintenQVD0]

You are missing the ENV in every docker file before the HOME variable

[avoxmr]

Hi, what do you mean? Is there anything wrong in: ENV USER=container HOME=/home/container

[QuintenQVD0]

Hi, what do you mean? Is there anything wrong in: ENV USER=container HOME=/home/container

Sorry. It looks like my phone is messing up the format