rollback dockerfile

docker/mysql/Dockerfile

@@ -1,11 +1,20 @@
-FROM php:7
-RUN apt-get update -y && apt-get install -y openssl zip unzip git netcat libpng-dev
-RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
-RUN docker-php-ext-install pdo pdo_mysql
-RUN docker-php-ext-install gd 
-WORKDIR /app
-COPY . /app
-RUN composer update
-ADD start.sh /start.sh
-CMD ["/start.sh"]
+ARG MYSQL_VERSION=latest
+FROM mysql:${MYSQL_VERSION}
 
+LABEL maintainer="Mahmoud Zalt <mahmoud@zalt.me>"
+
+#####################################
+# Set Timezone
+#####################################
+
+ARG TZ=UTC
+ENV TZ ${TZ}
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
+
+RUN chown -R mysql:root /var/lib/mysql/
+
+COPY my.cnf /etc/mysql/conf.d/my.cnf
+
+CMD ["mysqld"]
+
+EXPOSE 3306