Rewrote the example setup to have only one Docker container

Dockerfile

@@ -1,5 +1,31 @@
-FROM debian:jessie
+FROM php:7.0-fpm
 
+# Install Nginx
+ENV NGINX_VERSION 1.9.11-1~jessie
+
+RUN apt-key adv --keyserver hkp://pgp.mit.edu:80 --recv-keys 573BFD6B3D8FBC641079A6ABABF5BD827BD9BF62 \
+	&& echo "deb http://nginx.org/packages/mainline/debian/ jessie nginx" >> /etc/apt/sources.list \
+	&& apt-get update \
+	&& apt-get install -y ca-certificates nginx=${NGINX_VERSION} gettext-base \
+	&& rm -rf /var/lib/apt/lists/*
+
+# Install supervisor
+RUN apt-get update && apt-get install -y supervisor
+
+# Configure nginx
+RUN rm /etc/nginx/conf.d/default.conf
+COPY config/nginx.conf /etc/nginx/conf.d/nginx.conf
+
+# Configure supervisor
+COPY config/supervisord.conf /etc/supervisor/conf.d/supervisord.conf
+
+# Configure PHP-FPM
+COPY config/php.ini /usr/local/etc/php/conf.d/custom.ini
+
+# Add application
+RUN mkdir -p /var/www/html
+WORKDIR /var/www/html
 COPY src/ /var/www/html/
 
-VOLUME /var/www/html/
+EXPOSE 80 443
+CMD ["/usr/bin/supervisord"]