VM will always be shit at compilation tasks. All of the existing solutions out there (including Docker) will lead to slower builds, especially if you need to build an embedded Linux distribution. Native is better, for those tasks.
The haters he’s replying to are literally splitting hairs.
Wow, they shave off 3 mins to run an interpreted language test suite. This is the ABSOLUTE state of the industry right now.
Except the filesystem. Which is what everyone seems to forget. And that's the big thing we're talking about here in reference to Ruby and tests being slow.
The file system is native too depending on what filesystem your host is running. If the host is running a Copy on Write filesystems like ZFS or BTRFS docker can use it natively.
The haters he’s replying to are literally splitting hairs.
Wow, they shave off 3 mins to run an interpreted language test suite. This is the ABSOLUTE state of the industry right now.