Fix error cannot verify mirrors.edge.kernel.org's certificate (kubesp…

…here#50)

* Fix error cannot verify mirrors.edge.kernel.org's certificate

Signed-off-by: rick <1450685+LinuxSuRen@users.noreply.github.com>

* Set the specific jdk version

Add jdk11 support (kubesphere#38)

* Add jdk11 support

Signed-off-by: rick <1450685+LinuxSuRen@users.noreply.github.com>

* Build maven-jdk11 image via github action

Merge pull request kubesphere#22 from LinuxSuRen/use-specific-base-ver

Use a specified version of base image instead the latest