docker php-fpm image includes php manual

docker/php-fpm/Dockerfile

@@ -11,7 +11,7 @@ ARG USER_ID
 RUN sed -i 's/main/main contrib non-free/g' /etc/apt/sources.list
 RUN apt-get update && \
     apt-get install -y --no-install-recommends apt-utils apt-transport-https
-RUN apt-get install -y --no-install-recommends curl wget iputils-ping dnsutils lsb-release vim sudo rsync tzdata locales openssl libapr1-dev libssl-dev
+RUN apt-get install -y --no-install-recommends curl wget iputils-ping dnsutils lsb-release vim sudo rsync tzdata locales openssl libapr1-dev libssl-dev man-db
 
 RUN ln -fs /usr/share/zoneinfo/Europe/Paris /etc/localtime \
     && dpkg-reconfigure --frontend noninteractive tzdata
@@ -113,6 +113,8 @@ EXPOSE 9000
 COPY php.ini /usr/local/etc/php/php.ini
 COPY php-fpm.conf /usr/local/etc/php-fpm.conf
 
+RUN pear install doc.php.net/pman
+
 RUN sed -i "s:USERNAME:${USERNAME}:" /usr/local/etc/php-fpm.conf
 
 CMD ["php-fpm", "-F"]

docker/php-fpm/php.ini

 [PHP]
 short_open_tag = Off
 implicit_flush = Off
-disable_functions = "dl,backtick_operator,shell_exec,set_time_limit,max_execution_time"
+disable_functions = "dl,backtick_operator,shell_exec"
 zend.enable_gc = On
 expose_php = Off
 error_reporting = E_ALL & ~E_DEPRECATED & ~E_NOTICE & ~E_STRICT & ~E_WARNING