Taiga InvalidImageName, some 6.4.3 images are not available in docker.io

[Mbd06b]

The images used in your helm, get their versions from your Chart.yaml appVersion:

apiVersion: v2
name: taiga
description: A Helm chart for Taiga
type: application
version: 6.4.3
appVersion: 6.4.3

The problem is that multiple images of this particular version (6.4.3) are not consistently available in the referenced docker.io repo See: https://hub.docker.com/r/taigaio/taiga-back/tags as an example of why helm is failing to pull the "taiga-back" image along with other images.

(6.4.3 should be right here)

Which results in this,

I've forked your repo, but have a bit of a learning curve trying to customize/deploy my own helm repo in order to either try and upgraded or downgraded image versions. If I figure it out I'll send in a pull request.

[Mbd06b]

Here's the pull Request to resolve the root issues I had here.
#18