Curl 在Docker容器中运行Apache Cassandra

我正在处理Dockerfile，无法通过此错误。我对这个错误做了很多研究，但似乎找不到解决办法

代码：
来自ubuntu:trusty

RUN echo "deb http://www.apache.org/dist/cassandra/debian 36x main" | sudo tee -a /etc/apt/sources.list.d/cassandra.sources.list  
RUN sudo apt-get install -y curl nginx  
RUN sudo apt-get update  
RUN curl https://www.apache.org/dist/cassandra/KEYS | sudo apt-key add -
RUN sudo apt-get update  
RUN sudo apt-get install cassandra  
RUN sudo service cassandra -fR  

错误：…

E: Unable to locate package curl  
E: Unable to locate package nginx  
The command '/bin/sh -c sudo apt-get install -y curl nginx' returned a non-zero code: 100  

---

即使我正在安装curl和nginx。在安装curl之前，请帮助运行

apt-get-update

。执行curl安装时，包列表不是最新的。此外，您必须在trusty上获得

openjdk-8-jre-headless

，才能安装cassandra：

FROM ubuntu:trusty
RUN echo "deb http://www.apache.org/dist/cassandra/debian 36x main" | tee -a /etc/apt/sources.list.d/cassandra.sources.list
RUN apt-get update
RUN apt-get install -y software-properties-common && add-apt-repository ppa:openjdk-r/ppa -y && apt-get update
RUN apt-get install -y curl nginx
RUN curl https://www.apache.org/dist/cassandra/KEYS | sudo apt-key add - && sudo apt-get update
RUN apt-get install -y cassandra
RUN service cassandra start