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 Job ID Name Coverage
  Lint
passed #15870
shellcheck

00:00:13

passed #15871
shfmt

00:00:10

 
  Build
passed #15872
secure
build:secure

00:31:10

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

00:02:47

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

00:03:53

passed #15873
test-vagrant-boxes-format

00:00:38