> If you are using go between 1.12 to 1.15 within containers, you likely want to set GODEBUG=madvdontneed=1. :-)

This setting is default in Go 1.16+, which was published about 1 year ago. They don't mention what version they're using. The last several releases have landed some pretty significant improvements as I recall, maybe this is a good excuse to upgrade the Go release you use to compile your app.