E：软件包'oracle-java8-installer'在Docker Ubuntu中没有安装候选

Question

我想在docker上的Ubuntu映像中安装java8。 所以我在 dockerfile 中插入了以下代码：

FROM ubuntu:latest
RUN  apt-get update 
CMD ["echo", "apt-get update done ..."]
RUN apt-get -qq install -y wget
CMD ["echo", "wget Done ..."]
RUN apt-get install -y software-properties-common 
CMD ["echo","apt-get install -y software-properties-common"]
RUN add-apt-repository -y ppa:webupd8team/java 
CMD ["echo","add-apt-repository. ..."]
RUN  apt-get update 
RUN  apt-get -qq upgrade
CMD ["echo", "apt-get update done ..."]
# add webupd8 repository
RUN 
    wget https://download.docker.com/linux/ubuntu/gpg && 
    apt-key add gpg &&
    apt-get update  &&
    echo "===> add webupd8 repository..."  && 
    echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list  && 
    echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list  && 
    apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886  && 
    apt-get update
RUN echo "===> install Java"  && 
  apt-get -qq upgrade && 
  echo debconf shared/accepted-oracle-license-v1-1 select true | debconf-set-selections  && 
  echo debconf shared/accepted-oracle-license-v1-1 seen true | debconf-set-selections  && 
   apt-get update &&
  DEBIAN_FRONTEND=noninteractive  apt-get install -f oracle-java8-installer

但是给我这个错误'''阅读包列表...构建依赖树...正在读取状态信息...软件包 oracle-java8-installer 不可用，但由另一个软件包引用。这可能意味着软件包丢失、已过时或只能从其他来源获得

E：软件包"oracle-java8-installer"没有安装候选"

Answer 1

Docker Hub 中有一个 Ubuntu+java8 的镜像。所以可以使用这个存储库(在此处输入链接说明(