我有一个图像php5.6 + apache，我使用自3周以前，当我建立它，通过Dockerfile。
我正在使用这个base image来开始我的形象。一切都很好，直到今天我不得不改变php.ini中的一些变量。
现在，当我尝试再次构建图像时，我收到此错误：
Step 5/173 : RUN apt-get install -y php5-common
---> Running in 8114082e9931
Reading package lists...
Building dependency tree...
Reading state information...
Package php5-common is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'php5-common' has no installation candidate
The command '/bin/sh -c apt-get install -y php5-common' returned a non-zero code: 100
它似乎正在为我尝试安装的每个php模块发生。
这是Dockerfile的一部分：
FROM php:5-apache
## Update apt-get
RUN apt-get update
RUN php -m
RUN php -v
RUN apt-get install -y php5-common
RUN apt-get install -y php-calendar
RUN docker-php-ext-install bcmath
RUN apt-get install -y php5-mhash
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
#COPYING__php.ini
RUN cp /etc/php5/cli/php.ini /usr/local/etc/php/
RUN ls -l /usr/local/etc/
## Setting up php.ini varaibles
RUN grep '^post_max_size' /usr/local/etc/php/php.ini
RUN sed -i 's,^post_max_size =.*$,post_max_size = 2048M,' /usr/local/etc/php/php.ini
RUN grep '^post_max_size' /usr/local/etc/php/php.ini
RUN grep '^upload_max_filesize' /usr/local/etc/php/php.ini
RUN sed -i 's,^upload_max_filesize =.*$,upload_max_filesize = 2048M,' /usr/local/etc/php/php.ini
RUN grep '^upload_max_filesize' /usr/local/etc/php/php.ini
...
对于3周前工作的所有模块，基本上都是has no installation candidate错误。
我怎么能解决这个问题？
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