CoreOS is also based on ChromiumOS. I wouldn't be too worried on if this is lightweight or not. Google has been running everything in containers since 2014, and

CoreOS is also based on ChromiumOS. I wouldn't be too worried on if this is lightweight or not. Google has been running everything in containers since 2014, and before that they were using containers since the mid-2000s. When it comes to containers, I'm don't think anyone has more experience using containers at large scales than Google.