Konstantin Olshanov

Results 2 issues of Konstantin Olshanov

This reverts commit 71db90605fec694ccc40b989a0feecbf895eea1d. The workaround isn't needed. The reported failures was caused by incorrect runbook.

1. Add ability to specify additional build dependencies. For example, Ubuntu 20.04 image provided by Canonical miss `zstd` package required for kernel build. And Ubuntu 18.04 image lack of `cpio`...