refactor(ci): combine Gentoo with other docker tests #5762

Job	Run time
Check for file changes	4s
Check pull request title	2s
Check depencencies	45s
Check hyperlinks	41s
Check the documentation	33s
Lint the yaml code	3s
Lint the shell code	10s
Lint the Dockerfile code	31s
Test source on FreeBSD	34m 24s
Test source on NetBSD	34m 28s
Test package on Ubuntu 22	3m 5s
Test package on Ubuntu 24	4m 7s
Docker image for Gentoo	1h 47m 45s
Test package on macOS 14	4m 52s
Test source on OpenBSD	43m 37s
Docker image for Alpine	35m 4s
Test package on macOS 15	2m 17s
Docker image for Amazon Linux	6m 11s
Test source on Ubuntu 22	24m 52s
Docker image for Arch	3m 52s
Test source on Ubuntu 24	30m 50s
Docker image for Clear Linux	6m 16s
Test source on macOS 14	16m 43s
Docker image for Debian	4m 29s
Test source on macOS 15	18m 47s
Docker image for Fedora	5m 22s
Docker image for Kali	2m 32s
Docker image for Manjaro	5m 41s
Docker image for Oracle Linux	2m 32s
Docker image for Red Hat Enterprise	6m 48s
Docker image for Rocky Linux	4m 44s
Docker image for SUSE Enterprise	4m 28s
Docker image for Ubuntu	7m 23s
Docker image for openSUSE Leap	5m 13s
Docker image for openSUSE Tumbleweed	3m 52s
	7h 13m 3s

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