prevent installer rerun and remove update path #312

Job	Run time
bookworm armv7 / build	3m 21s
bullseye armv7 / build	3m 17s
bullseye armv7 / test (run_install_common.sh)	13m 30s
bullseye armv7 / test (run_install_faststartup.sh)	10m 54s
bullseye armv7 / test (run_install_webapp_local.sh)	21m 47s
bullseye armv7 / test (run_install_webapp_download.sh)	14m 16s
bullseye armv7 / test (run_install_libzmq_local.sh)	24m 15s
bookworm armv7 / test (run_install_common.sh)	13m 20s
bookworm armv7 / test (run_install_faststartup.sh)	10m 15s
bookworm armv7 / test (run_install_webapp_local.sh)	21m 26s
bookworm armv7 / test (run_install_webapp_download.sh)	13m 17s
bookworm armv7 / test (run_install_libzmq_local.sh)	25m 43s
bullseye armv7 / cleanup	3s
bookworm armv7 / cleanup	4s
	2h 55m 28s

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