写一个dockerfile，环境是php7.3，包括mysql5.7

FROM php:7.3-apache

RUN apt-get update && apt-get install -y \
libfreetype6-dev \
libjpeg62-turbo-dev \
libpng-dev \
libzip-dev \
unzip \
&& docker-php-ext-install -j$(nproc) iconv mysqli pdo_mysql zip \
&& docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
&& docker-php-ext-install -j$(nproc) gd \
&& a2enmod rewrite

COPY . /var/www/html/

RUN chown -R www-data:www-data /var/www/html/

EXPOSE 80

CMD ["apache2-foreground"]

# Dockerfile for MySQL 5.7
FROM mysql:5.7

COPY ./my.cnf /etc/mysql/conf.d/my.cnf

EXPOSE 3306

CMD ["mysqld"]