Write logs to a volume

Dockerfile

 FROM nginx:mainline-alpine AS nginx
 COPY --from=minify /tmp/site /usr/share/nginx/html
 ADD nginx.conf /etc/nginx/nginx.conf
+VOLUME /logs

nginx.conf

                       '$status $body_bytes_sent "$http_referer" '
                       '"$http_user_agent" "$http_x_forwarded_for"';
 
-    access_log  /var/log/nginx/access.log  main;
+    access_log  /logs/access.log  main;
 
     sendfile        on;