add Docker repo

Dockerfile

@@ -1,15 +1,27 @@
 FROM php:7.1-apache
 
+ENV HOME /var/www/html
 ENV TZ Asia/Shanghai
-WORKDIR /var/www/html
+ENV APACHE_DOCUMENT_ROOT $HOME
 
-COPY . .
-RUN apt-get update && \
-    apt-get install -y \
-        libzip-dev \
-        libonig-dev \
-    && docker-php-ext-install pdo pdo_mysql zip pcntl fileinfo
+RUN ln -snf /usr/share/zoneinfo/${TZ} /etc/localtime && echo ${TZ} > /etc/timezone \
+    && sed -ri -e 's!/var/www/!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/apache2.conf /etc/apache2/conf-available/*.conf \
+    && sed -ri -e 's!/var/www/html/!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/sites-available/*.conf \
+    && apt-get update && apt-get install -y \
+              libfreetype6-dev \
+              libjpeg62-turbo-dev \
+              libpng-dev \
+    && docker-php-ext-install pdo pdo_mysql zip pcntl fileinfo \
+    && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
+    && docker-php-ext-install -j$(nproc) gd \
+    && apt-get clean \
+    && apt-get autoclean \
+    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-RUN chmod -R 777 /var/www/html
+COPY . $HOME
 
-EXPOSE 80
+RUN a2enmod rewrite \
+    && chmod -R 0755 $HOME \
+    && chown -R www-data:www-data $HOME
+
+EXPOSE 80