Ticket #4615: (web.sh) - select browser at runtime fixes #136

Job	Run time
call-build-alpine / build-alpine	2m 11s
call-build-freebsd / build-freebsd	3m 3s
call-build-fedora / build-fedora	1m 56s
call-build-macos / build-macos	1m 37s
call-build-solaris / build-solaris	5m 26s
call-build-ubuntu / build-ubuntu	3m 56s
	18m 9s

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