Update the docker hub image description

[Daniel-Khodabakhsh]

The description of the gittools/gitversion docker image on docker hub currently shows to use the 5.3.5-linux-alpine.3.10-x64-netcoreapp3.1 tag. It's reasonable that this version doesn't change very often because it's a hassle to manually update this everytime there's a new version, but can we update this once now?

The reason for this is that version 5.3.5 doesn't recognise the main branch as a main branch, only master, and develop.

If we can bump this version to 5.6.11 that would save people who copy paste from docker hub.

Can we also add a windows friendly command version as well?

docker run --rm -v "%CD%:/repo" gittools/gitversion:5.6.11-debian.10-x64 /repo

[asbjornu]

Thanks for the nudge, I updated to gittools/gitversion:5.6.10-alpine.3.12-x64-3.1 now. This is going to slip again in the future, though, since it's a manual operation. The optimal thing would be to have a GitHub Action running on: release that updated the README on Docker Hub automatically.

I've created GitTools/GitVersion#2742 to track this improvement.