Unbreak aarch64 dockerbuild under Ubuntu 22.04

[sxa]

Checklist

• commit message has one of the standard prefixes
• faq.md updated if appropriate
• other documentation is changed or added (if applicable)
• playbook changes run through VPC or QPC (if you have access)
• VPC/QPC not applicable for this PR
• for inventory.yml changes, bastillion/nagios/jenkins updated accordingly

This line should only ever have been in the ubuntu 16.04 one as it's the image we use for arm32. Anyone building a later image should have it able to work on aarch64.

[karianna]

@sxa just linter fixes to go?

[sxa]

@sxa just linter fixes to go?

I don't think they're related to my PR given that I'm just deleting a line in a Dockerfile here. I'm checking on my phone but it looks like it's objecting to solve indenting in an ansiblr playbook

[karianna]

Yeah, I think it's an easy enough fix if you don't mind updating it when you get to your machine?

[sxa]

Yeah, I think it's an easy enough fix if you don't mind updating it when you get to your machine?

There are a LOT of fixes that it needs and I do feel that these sorts of changes render the "Blame" history useless for all changed lines. Unclear sure why these have just been flagged - I'm somewhat tempted to just switch them off but I'll do a separate PR for them with these comments.

[sxa]

So we trigger the linter checkes (including yamllint) when there are changes in the ansibel directory but not .github which means that when the yaml files are updated the checks aren't run on them, but the checks appear to be running against them, so the other PR isn't actually running the checks at present ... Not the Monday morning I had in plan 🤣

[sxa]

render the "Blame" history useless for all changed lines

Well that's something I've never seen before but now intrigued to trial it in this repository ...
https://docs.github.com/en/repositories/working-with-files/using-files/viewing-a-file#ignore-commits-in-the-blame-view

[sxa]

@karianna I genuinely have no idea why but I just re-ran the failing checks and it passed, so my other PR isn't strictly necessary now ...