fix docker issue

Dockerfile

@@ -42,3 +42,8 @@ RUN docker-php-ext-install zip
 RUN docker-php-ext-install iconv pdo pdo_mysql bcmath pcntl exif
 RUN docker-php-ext-configure gd --with-jpeg --with-freetype
 RUN docker-php-ext-install gd
+
+RUN php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" \
+    && php composer-setup.php \
+    && php -r "unlink('composer-setup.php');" \
+    && mv composer.phar /usr/bin/composer

docker-compose.yml

@@ -50,7 +50,6 @@ services:
     build:
       context: ./
       dockerfile: ./docker-compose/cron.dockerfile
-    container_name: cron
     volumes:
       - ./:/var/www
     networks: