Investigate podman build performance versus vfkit

[jakecorrenti]

In this PR in the Podman repo (https://github.com/containers/podman/pull/27059) it appears that the libkrun performance is approximately 3 seconds slower than vfkit for build operations.

I wanted to file this issue as a placemarker for futher investigation to see if there's anything we can do to improve the performance.

Benchmark results in question

Mac OS

• Number of runs: 5
• Machine:
  • Chip: Apple M3 Pro
  • RAM: 36 GB
  • SSD: 1 TB Apple SSD
• Podman machine configuration:
  • CPUs: 4
  • Memory: 5.1 GB

Providers

applehv

• Before: 67.84 s
• After: 9.99 s

libkrun

• Before: 70.18 s
• After: 12.62 s