Merge pull request goharbor#7757 from reasonerjt/install-sh-chk

Fix a bug of checking docker version in install.sh

Author: reasonerjt

make/install.sh

@@ -101,7 +101,7 @@ function check_docker {
 docker_version_part2=${BASH_REMATCH[3]}
 
 # the version of docker does not meet the requirement
-if [ "$docker_version" -lt 17 ] || ([ "$docker_version" -eq 17 ] && [ "$docker_version_part1" -lt 6 ])
+if [ "$docker_version_part1" -lt 17 ] || ([ "$docker_version_part1" -eq 17 ] && [ "$docker_version_part2" -lt 6 ])
 then
 error "Need to upgrade docker package to 17.06.0+."
 exit 1