Add nginx.ini with uploads limit.

Dockerfile

@@ -10,3 +10,5 @@ RUN apt-get update && apt-get install -y \
     && pecl install redis-3.1.1 imagick-3.4.3 libsodium-1.0.6 \
     && docker-php-ext-enable redis imagick libsodium \
     && docker-php-ext-install -j$(nproc) exif gettext intl mcrypt sockets zip
+
+COPY php/conf.d/nginx.ini /usr/local/etc/php/conf.d/nginx.ini

php/conf.d/nginx.ini

@@ -0,0 +1,7 @@
+cgi.fix_pathinfo = 0
+
+file_uploads = On
+memory_limit = 32M
+upload_max_filesize = 32M
+post_max_size = 32M
+max_execution_time = 600