如何在“docker run”期间运行 2 个服务？答案

【问题标题】：How to run 2 services during 'docker run'?如何在“docker run”期间运行 2 个服务？
【发布时间】：2017-12-12 05:27:26
【问题描述】：

我有一个 Dockerfile，它在里面创建一个带有 Apache/php 和 redis 的图像。我知道它应该分成 2 个容器。但是我想知道是否可以在运行过程中启动apache和redis。

现在我可以用两种不同的方式跑步：

docker run --rm -p 80:80 -p 6379:6379 -v $MY_FULLPATH:/var/www/html -e REMOTE_HOST=$REMOTE_HOST my_img redis-server
docker run --rm -p 80:80 -p 6379:6379 -v $MV_FULLPATH:/var/www/html -e REMOTE_HOST=$REMOTE_HOST my_img apache2-foreground

如果我使用第一种方法运行，我必须打开终端手动启动 apache。如果我使用第二个运行，我必须手动启动 REDIS。

根据文档："If you list more than one CMD then only the last CMD will take effect." 我知道一开始只有“redis-server”才能工作。

那么有没有办法自动设置展位？ .

这是我的 Dockerfile：

FROM php:5-apache

## Update apt-get
RUN apt-get update

RUN apt-get install -y figlet

RUN figlet MV_Docker_Build

## UTILITIES
RUN figlet vim
RUN apt-get install -y vim
RUN figlet wget
RUN apt-get install -y wget
RUN figlet CURL
RUN apt-get install -y curl



## APACHE2  basic installation
RUN figlet APACHE2
RUN apachectl -M
RUN a2enmod rewrite
RUN a2enmod expires
RUN service apache2 restart
RUN apachectl -M


## ====================================================================== > PHP modules

## Note: when installing from php5 for some modules we need to copy from php5/mods-available to local/etc/php/conf.d and create a simbolic link
RUN figlet PHP_MODULES
RUN php -m

RUN apt-get install -y php5-common

RUN apt-get install -y php-calendar
#RUN cp /etc/php5/mods-available/calendar.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/calendar.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/calendar.so

#RUN docker-php-ext-install calendar 

RUN docker-php-ext-install bcmath

RUN apt-get install -y php5-mhash
#RUN cp /etc/php5/mods-available/mhash.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/mhash.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/mhash.so

RUN apt-get install -y php5-intl
RUN cp /etc/php5/mods-available/intl.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/intl.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/intl.so

RUN apt-get install -y php5-mcrypt
RUN cp /etc/php5/mods-available/mcrypt.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/mcrypt.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/mcrypt.so

RUN apt-get install -y php5-redis
RUN cp /etc/php5/mods-available/redis.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/redis.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/redis.so

RUN apt-get install -y php5-mysql
RUN cp /etc/php5/mods-available/mysql.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/mysql.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/mysql.so

RUN cp /etc/php5/mods-available/opcache.ini /usr/local/etc/php/conf.d

RUN apt-get install -y php5-gd
RUN cp /etc/php5/mods-available/gd.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/gd.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/gd.so

RUN apt-get install -y php5-gdcm
RUN cp /etc/php5/mods-available/gdcm.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/gdcm.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/gdcm.so

RUN apt-get install -y php5-vtkgdcm
RUN cp /etc/php5/mods-available/vtkgdcm.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/vtkgdcm.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/vtkgdcm.so

RUN apt-get install -y php5-ldap
RUN cp /etc/php5/mods-available/ldap.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/ldap.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/ldap.so

RUN apt-get install -y php5-xsl
RUN cp /etc/php5/mods-available/xsl.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/xsl.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/xsl.so

RUN apt-get install -y php5-tidy
RUN cp /etc/php5/mods-available/tidy.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/tidy.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/tidy.so

RUN apt-get install -y php5-xmlrpc
RUN cp /etc/php5/mods-available/xmlrpc.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/xmlrpc.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/xmlrpc.so

RUN apt-get install -y php5-pgsql
RUN cp /etc/php5/mods-available/pgsql.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/pgsql.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/pgsql.so


RUN cp /etc/php5/mods-available/mysqli.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/mysqli.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/mysqli.so
RUN cp /etc/php5/mods-available/pdo.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/pdo.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/pdo.so
RUN cp /etc/php5/mods-available/pdo_mysql.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/pdo_mysql.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/pdo_mysql.so
RUN cp /etc/php5/mods-available/pdo_pgsql.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/pdo_pgsql.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/pdo_pgsql.so
RUN cp /etc/php5/mods-available/readline.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/readline.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/readline.so

#RUN apt-get install -y php5-snmp
#RUN cp /etc/php5/mods-available/snmp.ini /usr/local/etc/php/conf.d && ln -s /usr/lib/php5/20131226/snmp.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/snmp.so

RUN figlet PHP_MODULES
RUN php -m


## ====================================================================== > End of PHP modules




## ====================================================================== > REDIS
RUN figlet REDIS
RUN apt-get install -y telnet redis-server
RUN apt-get install -y redis-server

## ====================================================================== > NPM
RUN figlet NPM
RUN apt-get install -y npm

## ====================================================================== > COPYING php.ini
RUN figlet COPYING__php.ini
RUN cp /etc/php5/cli/php.ini /usr/local/etc/php/
RUN ls -l /usr/local/etc/

## ====================================================================== > XDEBUG
# XDEBUG EXTENSION FOR PHP | DOCUMENTATION => https://xdebug.org/docs/remote 
#
# install xdebug and enable it. This block of code goes through the installion from source and compiling steps found
# on the xdebug website
# https://xdebug.org/docs/install
RUN figlet INSTALLING__XDEBUG
RUN cd /tmp \
    && wget http://xdebug.org/files/xdebug-2.5.4.tgz \
    && tar -xvzf xdebug-2.5.4.tgz \
    && cd xdebug-2.5.4 \
    && phpize \
    && ./configure  \
    && make \
    && cp modules/xdebug.so /usr/local/lib/php/extensions/no-debug-non-zts-20131226/

RUN figlet INSIDE_no-debug-non-zts-20131226/         
RUN ls -l /usr/local/lib/php/extensions/no-debug-non-zts-20131226/



#https://stackoverflow.com/questions/47596381/how-to-setup-an-variable-env-inside-dockerfile-to-be-overriden-in-a-docker-conta?noredirect=1#comment82150863_47596381
# ADD xdebug configurations
RUN figlet SETTING__XDEBUG__php.ini
RUN { \
        echo '[xdebug]'; \
        echo 'zend_extension=/usr/local/lib/php/extensions/no-debug-non-zts-20131226/xdebug.so'; \
        echo 'xdebug.remote_enable=1'; \
        echo 'xdebug.remote_port=9000'; \  
        echo 'xdebug.remote_autostart=1'; \
        echo 'xdebug.remote_handler=dbgp'; \
        echo 'xdebug.idekey=dockerdebug'; \
        echo 'xdebug.profiler_output_dir="/var/www/html"'; \
        echo 'xdebug.remote_connect_back=0'; \
        echo 'xdebug.remote_host=$REMOTE_HOST'; \
    } >> /usr/local/etc/php/php.ini



RUN figlet XDEGUB__IN__php.ini
RUN cat /usr/local/etc/php/php.ini


## ====================================================================== > COMPOSER

RUN figlet Escape_SUDO
RUN exit

RUN figlet Install__COMPOSER
RUN php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" \
    && php -r "if (hash_file('SHA384', 'composer-setup.php') === '544e09ee996cdf60ece3804abc52599c22b1f40f4323403c44d44fdfdd586475ca9813a858088ffbc1f233e9b180f061') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;" \
    && php composer-setup.php \
    && php -r "unlink('composer-setup.php');" \
    && mv composer.phar /usr/bin/composer

RUN composer


## ====================================================================== > PhpUnit

RUN figlet PhpUnit
RUN curl https://phar.phpunit.de/phpunit-5.6.0.phar -L -o phpunit.phar
RUN chmod +x phpunit.phar
RUN mv phpunit.phar /usr/local/bin/phpunit



RUN figlet COPYING_entrypoint.sh
COPY entrypoint.sh /usr/local/bin/
RUN figlet Permission_entrypoint.sh
RUN chmod +x /usr/local/bin/entrypoint.sh

ENTRYPOINT [ "entrypoint.sh" ]

# EXPOSE - PORTS
RUN figlet EXPOSE_PORTS
EXPOSE 80
#EXPOSE 6379
EXPOSE 9000
#CMD ["apache2-foreground","redis-server"]



#ADD run.sh /run.sh
COPY run.sh /usr/local/bin/
RUN chmod +x /usr/local/bin/run.sh
CMD ["/bin/sh", "-c", "/run.sh"]

这是run.sh

#!/usr/bin/env bash
exec apache2-foreground &
exec redis-server &

这是 entrypoint.sh

#!/bin/bash
set -e

# Check if our environment variable has been passed.
if [ -z "${REMOTE_HOST}" ]
then
  echo "REMOTE_HOST has not been set."
  exit 1
else
  sed -i.bak "s/\$REMOTE_HOST/${REMOTE_HOST}/g" /usr/local/etc/php/php.ini
fi

exec "$@"

【问题讨论】：

标签： docker service

【解决方案1】：

您可以通过以下几种方式启动多个进程：

将它们作为服务启动
通过 cron 作业启动它们 (@reboot)
在后台启动进程

在 Dockerfile 发布后更新

在我尝试回答几个问题之前：

每次您在 Dockerfile 中输入 RUN 命令时，它都会创建一个新层，这会使映像更大，构建更慢。
这个容器显然试图做太多事情。一个容器应该做一件事情和一件好事。

话虽如此，我想我有一个解决方案:-)

删除run.sh
将您的入口点更改为：

#!/bin/bash set -e # Check if our environment variable has been passed. if [ -z "${REMOTE_HOST}" ] then echo "REMOTE_HOST has not been set." exit 1 else sed -i.bak "s/\$REMOTE_HOST/${REMOTE_HOST}/g" /usr/local/etc/php/php.ini fi echo "Starting redis" exec redis-server & exec "$@"

你的 Dockerfile 到此结束：

RUN figlet EXPOSE_PORTS EXPOSE 80 #EXPOSE 6379 EXPOSE 9000 CMD ["apache2-foreground"]

重建并玩得开心:-)

Screenshot of my running console

【讨论】：

嗨 Ivonet，我听从了你的建议，但它不起作用。我创建了一个 run.sh 文件。在里面我使用了 #!/usr/bin/env bash exec apache2-foreground & exec redis-server & 。在 Dockerfile ADD run.sh /run.sh ... 你的代码里面。我正在运行docker run --rm -p 80:80 -v $MY_FULLPATH:/var/www/html -e REMOTE_HOST=$REMOTE_HOST my_img apache2-foreground 它只启动apache。我错过了什么？
你重新建立你的形象了吗？我在帖子中添加了一些额外的行
是的，我做到了。事实上，我已经摧毁了它。它启动 apache 或 REDIS，具体取决于我在 docker run ... 期间调用的内容。
在最后离开参数
如果我离开 end 参数，容器在创建后立即退出。我只是检查容器内部，这就是我在 run.sh => root@48b993e1b824:/var/www/html/App/codedeploy# vi run.sh #!/bin/sh service apache2 restart 中找到的。在构建过程中似乎没有保存redis-server