In the Dockerfiles `VOLUMES` should actually be `VOLUME`

[elafarge]

Here https://github.com/jacksoncage/varnish-docker/blob/master/Dockerfile#L22 .

Indeed, I tried to build the image locally and got the following error :

Step 9 : VOLUMES Unknown instruction: VOLUMES

According to the Dockerfile reference, this instructions should be VOLUME without an "S" :)