Add swap file adjustment for webapp build #176

Job	Run time
bookworm armv7 / build	4m 12s
bullseye armv7 / build	3m 24s
bullseye armv7 / test (run_install_common.sh)	13m 28s
bullseye armv7 / test (run_install_faststartup.sh)	9m 52s
bullseye armv7 / test (run_install_webapp_local.sh)	21m 50s
bullseye armv7 / test (run_install_webapp_download.sh)	13m 59s
bullseye armv7 / test (run_install_libzmq_local.sh)	23m 53s
bookworm armv7 / test (run_install_common.sh)	13m 5s
bookworm armv7 / test (run_install_faststartup.sh)	9m 30s
bookworm armv7 / test (run_install_webapp_local.sh)	20m 56s
bookworm armv7 / test (run_install_webapp_download.sh)	12m 35s
bookworm armv7 / test (run_install_libzmq_local.sh)	24m 12s
bullseye armv7 / cleanup	2s
bookworm armv7 / cleanup	3s
	2h 51m 1s

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