anchor.diff:  
   RUN if [ ${INSTALL_YAML} = true ]; then \
       apt-get install libyaml-dev -y ; \
  -    pecl install yaml ; \
  +    if [ $(php -r "echo PHP_MAJOR_VERSION;") = "5" ]; then \
  +        pecl install -a yaml-1.3.2; \
  +    else \
  +        pecl install yaml; \
  +    fi && \
       docker-php-ext-enable yaml \
   ;fi
   
  
positive.code: ARG INSTALL_AMQP=false
  
  RUN if [ ${INSTALL_AMQP} = true ]; then \
      apt-get install librabbitmq-dev -y && \
      # Install the amqp extension
      pecl install amqp && \
      docker-php-ext-enable amqp && \
  
negative.code: ARG INSTALL_APCU=false
  
  RUN if [ ${INSTALL_APCU} = true ]; then \
      if [ $(php -r "echo PHP_MAJOR_VERSION;") = "5" ]; then \
          pecl install -a apcu-4.0.11; \
      else \
          pecl install apcu; \
      fi && \
      docker-php-ext-enable apcu \
  ;fi
  
  