Docker bugfixing #9

Job	Run time
bullseye armv7 / build	3m 5s
bookworm armv7 / build	3m 5s
bookworm armv7 / test (run_install_common.sh)	14m 33s
bookworm armv7 / test (run_install_faststartup.sh)	9m 48s
bookworm armv7 / test (run_install_webapp_local.sh)	14m 52s
bookworm armv7 / test (run_install_webapp_download.sh)	15m 52s
bookworm armv7 / test (run_install_libzmq_local.sh)	24m 34s
bullseye armv7 / test (run_install_common.sh)	14m 16s
bullseye armv7 / test (run_install_faststartup.sh)	9m 37s
bullseye armv7 / test (run_install_webapp_local.sh)	16m 33s
bullseye armv7 / test (run_install_webapp_download.sh)	16m 6s
bullseye armv7 / test (run_install_libzmq_local.sh)	23m 31s
bullseye armv7 / cleanup	4s
bookworm armv7 / cleanup	2s
	2h 45m 58s

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