我应该如何创建一个Dockerfile来在一个实例中运行多个服务？

我正在尝试创建一个Dockerfile。我是新来的Docker。我创建了这个Dockerfile，它将在一个实例中启动rabbitmq，ftp服务器和elasticsearch服务器。我创建了这样的文件：我应该如何创建一个Dockerfile来在一个实例中运行多个服务？

# Pull base image 
FROM alpine:latest 
MAINTAINER Harshit Prasad 

# define commonly used JAVA_HOME variable 
ENV JAVA_HOME /usr/lib/jvm/java-8-oracle 

# Expose the web interface ports 
# 2121: ftp, a FTP server to be used for mass data/file storage 
# 5672: rabbitmq, a rabbitmq message queue server to be used for global messages, queues and stacks 
# 9300: elastic, an elasticsearch server or main cluster address for global database storage 
EXPOSE 2121 5672 9300 

# install Java 
RUN \ 
    echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | debconf-set-selections && \ 
    add-apt-repository -y ppa:webupd8team/java && \ 
    apt-get update && \ 
    apt-get install -y oracle-java8-installer && \ 
    rm -rf /var/lib/apt/lists/* && \ 
    rm -rf /var/cache/oracle-jdk8-installer 

# install apache ftp server 1.1.0 
RUN wget http://www-eu.apache.org/dist/mina/ftpserver/1.1.0/dist/apache-ftpserver-1.1.0.tar.gz 
RUN tar xfz apache-ftpserver-1.1.0.tar.gz 

# run ftp server 
RUN cd apache-ftpserver-1.1.0 bin/ftpd.sh res/conf/ftpd-typical.xml 

# install RabbitMQ server 
RUN wget https://www.rabbitmq.com/releases/rabbitmq-server/v3.6.6/rabbitmq-server-generic-unix-3.6.6.tar.xz 
RUN tar xf rabbitmq-server-generic-unix-3.6.6.tar.xz 

# run the RabbitMQ server 
RUN cd rabbitmq_server-3.6.6/sbin/rabbitmq-server 

# install the management plugin to be able to use a web interface 
RUN cd rabbitmq_server-3.6.6/sbin/rabbitmq-plugins enable rabbitmq_management 

# install erlang programming language. RabbitMQ is written in erlang. 
RUN apt-get install erlang 

# elasticsearch service here 

# set current working directory to yacy_grid_mcp 
RUN git clone https://github.com/yacy/yacy_grid_mcp.git 
WORKDIR /yacy_grid_mcp

我想知道我是否正确创建Dockerfile。如果有人能帮助我，这将是非常棒的。另外请让我知道我应该如何着手添加elasticsearch服务。提前致谢！

来源

2017-06-16 Harshit Prasad