我正在尝试通过oracle-java8-installer在debian:jessiedocker容器上安装java8。以下是我的Dockerfile:FROMdebian:jessieENVJAVA_VERSION1.8.0RUNecho"debhttp://ppa.launchpad.net/webupd8team/java/ubuntutrustymain">/etc/apt/sources.list.d/webupd8team-java.listRUNecho"deb-srchttp://ppa.launchpad.net/webupd8team/java/ubuntutrus