Merge branch 'fd200' into 'master'

Dynamic allocation for file descriptors used in ./build-host.sh

Closes #135

See merge request !162
6 jobs for master in 35 minutes and 19 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Lint
passed shellcheck #15870

00:00:13

passed shfmt #15871

00:00:10

 
  Build
passed build:secure #15872
secure

00:31:10

 
  Test
passed test-basic-qemu #15874
fast-single-thread

00:02:47

passed test-cloudimg-qemu #15875
fast-single-thread

00:03:53

passed test-vagrant-boxes-format #15873

00:00:38