add docker version checking Signed-off-by: pixiake <guofeng@yunify.com>
Merge branch 'master' into release-1.1
update release build Signed-off-by: pixiake <guofeng@yunify.com>
Merge pull request kubesphere#366 from pixiake/release-1.0 update download script
merge master into release-1.0 Signed-off-by: pixiake <guofeng@yunify.com>