Fix blender 2.92 compatibility issue with Ubuntu

[QcFe]

Description

This PR provides a single Dockerfile for Blender container images and uses build args to specify the Blender version to ship into the image.
This also fixes an issue with the Blender 2.92 image, which has been unnoticed up to now. For some unknown reason Ubuntu 18.04 has some compatibility issues with Blender > 2.83.8. The unified Dockerfile builds the image from scratch using Ubuntu 20.04.

How Has This Been Tested?

The imagea has been run in a compatible local Docker environment.

[kingmakerbot]

Hi @QcFe. Thanks for your PR.

I am @kingmakerbot.
You can interact with me issuing a slash command in the first line of a comment.
Currently, I understand the following commands:

• /rebase: Rebase this PR onto the master branch
• /merge: Merge this PR into the master branch
• /hold: Adds hold label to prevent merging with /merge
• /unhold: Removes the hold label to allow merging with /merge
• /deploy-staging: Deploy a staging environment to test this PR
• /undeploy-staging: Manually undeploy the staging environment

Make sure this PR appears in the CrownLabs changelog, adding one of the following labels:

• kind/breaking: 💥 Breaking Change
• kind/feature: 🚀 New Feature
• kind/bug: 🐛 Bug Fix
• kind/cleanup: 🧹 Code Refactoring
• kind/docs: 📝 Documentation

[giorio94]

It looks to me this Dockerfile is identical to the LTS one, with just a different version. If so, wouldn't it be possible to keep only one and build twice with a different version as argument? Just to prevent code duplication and unwanted misalignements

[QcFe]

@giorio94 it is identical indeed but I didn't look close enough in the build.yaml file to see it could be automated easily, I'll proceed to make the change

[giorio94]

You could use build-args as here:

CrownLabs/.github/workflows/build.yml

Line 122 in df41684

build-args: |

[giorio94]

/lgtm

[giorio94]

/rebase

[giorio94]

/merge