- echo "Installing Arvados requires at least Ruby 1.9.3."
- echo "You may need to enter your password."
- read -p "Press Ctrl-C to abort, or else press ENTER to install ruby1.9.3 and continue. " unused
+ echo "Building the Arvados docker containers requires at least Ruby 1.9.3."
+ echo "Please install ruby 1.9.3 or higher before executing this script."
+ exit 1
+fi
+
+function usage {
+ echo >&2
+ echo >&2 "usage: $0 [options]"
+ echo >&2
+ echo >&2 "Calling $0 without arguments will build all Arvados docker images"
+ echo >&2
+ echo >&2 "$0 options:"
+ echo >&2 " -h, --help Print this help text"
+ echo >&2 " clean Clear all build information"
+ echo >&2 " realclean clean and remove all Arvados Docker images except arvados/debian"
+ echo >&2 " deepclean realclean and remove arvados/debian, crosbymichael/skydns and "
+ echo >&2 " crosbymichael/skydns Docker images"
+ echo >&2
+}