Updating Docker Compose & README.md

Dockerfile

@@ -4,8 +4,18 @@ RUN docker-php-ext-install curl && \
     a2enmod rewrite
 
 COPY . /var/www/html/
+COPY docker/docker-entrypoint.sh /usr/local/bin/gridtv-entrypoint.sh
 
-RUN chown -R www-data:www-data /var/www/html && \
-    chmod -R 775 /var/www/html
+RUN mkdir -p /data && \
+    chown -R www-data:www-data /var/www/html /data && \
+    find /var/www/html -type d -exec chmod 755 {} \; && \
+    find /var/www/html -type f -exec chmod 644 {} \; && \
+    chmod 755 /usr/local/bin/gridtv-entrypoint.sh
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
+  CMD php -r "exit(@file_get_contents('http://127.0.0.1/') === false ? 1 : 0);"
+
+ENTRYPOINT ["gridtv-entrypoint.sh"]
+CMD ["apache2-foreground"]
 
 EXPOSE 80