Bitnami has worked with all three cloud providers - I was in at least one video meeting with them when I was at Google on the GCP team. (To be clear, I haven't worked for Google in over 4 years and am speaking only for myself here.)

I suspect there are Bitnami offerings in Google's marketplace too - most things in that marketplace are built by third parties such as Bitnami, but unlike for Amazon's marketplace Google does view themselves as the reseller of the products offered there.

Bitnami does require applying updates via e.g. apt-get, as mentioned in another reply from someone else. I wonder if their GCE images follow Google's norm of turning on automatic security updates by default, as do most regular Google-supported GCE operating system images. No idea.

PS - Hi, long time no see, hope you're doing well!