Hi ,have a doubt please share me multistag docker file for below docker file for this 
FROM php:7.2-apache-stretch
RUN docker-php-ext-install mysqli pdo_mysql
RUN a2enmod rewrite
ARG DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y --fix-missing
apt-utils
gnupg
libmemcached-dev
RUN echo deb Index of /debian stretch main contrib non-free >> /etc/apt/sources.list
RUN echo deb-src Index of /debian stretch main contrib non-free >> /etc/apt/sources.list
RUN curl -sS --insecure http://200.201.11.14/dotdeb.gpg | apt-key update
#RUN echo “deb http://packages.dotdeb.org jessie all” >> /etc/apt/sources.list
#RUN echo “deb-src http://packages.dotdeb.org jessie all” >> /etc/apt/sources.list
#RUN curl -sS --insecure https://www.dotdeb.org/dotdeb.gpg | apt-key add -
Install Zip
RUN apt-get update && apt-get install -y
zlib1g-dev
libzip-dev
RUN docker-php-ext-install zip
Install Redis, Memcached
RUN pecl install redis && docker-php-ext-enable redis
RUN pecl install -f memcached && docker-php-ext-enable memcached
RUN apt-get update && apt-get install -y
imagemagick
graphicsmagick
libmemcached-dev
zip
unzip
wget
curl
–no-install-recommends
&& rm -r /var/lib/apt/lists/*
cron vim
RUN
apt-get update
&& apt-get install -y --no-install-recommends cron vim
&& apt-get install -y --no-install-recommends libc-client-dev libkrb5-dev
&& docker-php-ext-configure imap --with-imap --with-imap-ssl --with-kerberos
&& docker-php-ext-install imap
&& apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
imap
RUN apt-get update && apt-get install -y libc-client-dev libkrb5-dev && rm -r /var/lib/apt/lists/*
RUN docker-php-ext-configure imap --with-kerberos --with-imap-ssl
&& docker-php-ext-install imap && docker-php-ext-install exif
GD & bcmath
RUN buildRequirements=“build-essential libpng-dev libjpeg-dev libfreetype6-dev”
&& apt-get update && apt-get install -y ${buildRequirements} \
&& docker-php-ext-configure gd \
&& docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
&& docker-php-ext-install gd bcmath \
&& docker-php-ext-enable bcmath \
&& apt-get purge -y ${buildRequirements} \
&& rm -rf /var/lib/apt/lists/*
Imagick
RUN apt-get update && apt-get install -y
libmagickwand-dev --no-install-recommends
&& pecl install imagick
&& docker-php-ext-enable imagick
WORKDIR /var/www/html
RUN curl -sS https://getcomposer.org/installer -o composer-setup.php
RUN php composer-setup.php --install-dir=/usr/local/bin --filename=composer
COPY . /var/www/html
COPY .env /var/www/html
RUN /usr/local/bin/composer install --optimize-autoloader --ignore-platform-reqs
RUN /usr/local/bin/composer require league/flysystem-aws-s3-v3 ^1.0 --ignore-platform-reqs
RUN chmod -Rf 777 /var/www/html/storage
RUN chown -R www-data:www-data /var/www/html
RUN rm -rf /var/lib/apt/lists/ && curl -sL https://deb.nodesource.com/setup_10.x | bash -
RUN apt-get install nodejs -y
RUN echo “NODE Version:” && node --version
RUN echo “NPM Version:” && npm --version
RUN apt-get install -y libcurl4-openssl-dev pkg-config libssl-dev
RUN pecl config-set php_ini /etc/php.ini
RUN /usr/local/bin/composer dump-autoload --ignore-platform-reqs
RUN touch /usr/local/etc/php/conf.d/uploads.ini
&& echo “upload_max_filesize = 300M;” >> /usr/local/etc/php/conf.d/uploads.ini
&& echo “post_max_size = 350M;” >> /usr/local/etc/php/conf.d/uploads.ini
&& echo “memory_limit = 1024M;” >> /usr/local/etc/php/conf.d/uploads.ini
&& echo “max_input_time = -1;” >> /usr/local/etc/php/conf.d/uploads.ini
&& echo “max_execution_time = 0;” >> /usr/local/etc/php/conf.d/uploads.ini
RUN php artisan optimize:clear
#RUN php artisan migrate --force
#RUN php artisan db:seed --force
RUN npm install
RUN npm install gulp-cli -g
RUN npm install gulp
RUN npm run dev
RUN gulp default
#RUN php artisan passport:install
#RUN php artisan l5-swagger:generate
RUN chmod -R 777 storage
RUN php artisan storage:link
#RUN php artisan cache:clear
#RUN php artisan config:clear
#RUN php artisan view:clear
#RUN php artisan route:clear
#RUN /usr/local/bin/composer dump-autoload --ignore-platform-reqs
COPY ./000-default.conf /etc/apache2/sites-available/000-default.conf
please share it’s multistag docker file for this