Reason for default bot config to use old docker image

[quanyangsc]

Is there a reason why the default GCE instance template for the bots are using the older docker image versions?

[oliverchang]

Thanks for pointing this out!

No reason apart from that we've neglected updating them. I'll do that sometime this week.

[sfiecko]

@oliverchang - kind reminder about the case 👋