feat(INSTALLER): secure umask, non-root processes #832

Job	Run time
start / send_notification	5s
configuration / json_file	5s
commit_lint / run_command (3.8)	25s
commit_spell_check / run_command (3.8)	34s
dockerfile_lint / run_precommit_hook (3.8)	27s
markdown_links / check_markdown_links	20s
json_schema_lint / run_precommit_hook (3.8)	28s
markdown_lint / run_precommit_hook (3.8)	32s
markdown_spelling / run_precommit_hook (3.8)	40s
security / run_trufflehog	10s
pre-commit_hooks / precommit_hook_tests (3.8)	1m 21s
container (3.11) / compose_command_sequence	2m 43s
container (3.10) / compose_command_sequence	3m 3s
container (3.8) / compose_command_sequence	3m 17s
container (3.9) / compose_command_sequence	3m 22s
create_release / generate_github_release	8s
build_pi_portal	0s
build_filebeat	0s
success / send_notification	8s
build_packages_for_debian	0s
build_docker_images	0s
attach_artifacts	0s
success_release	0s
	17m 48s

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