plone.docker/master: add prerequisite of installing & running Docker

GitHub <jenkins-z4DKO/[email protected]> Mon, 31 Jul 2017 00:08:42 -0700 (PDT)
Newsgroups gmane.comp.web.zope.plone.cvs
Message-ID <[email protected]>
Repository: plone.docker
Branch: refs/heads/master
Date: 2017-07-28T15:28:34-05:00
Author: T. Kim Nguyen (tkimnguyen) <[email protected]>
Commit: https://github.com/plone/plone.docker/commit/18c7ecb212f64335c6d392da0c0cf2a6f1133ea3

add prerequisite of installing &amp; running Docker

Files changed:
M README.md

diff --git a/README.md b/README.md
index 8abf2a7..aa960cf 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,10 @@
 - [`5.0.8-alpine`, `5.0-alpine`, `5-alpine` (*5.0.8/alpine/Dockerfile*)](https://github.com/plone/plone.docker/blob/master/5.0/5.0.8/alpine/Dockerfile)
 - [`4.3.14-alpine`, `4.3-alpine`, `4-alpine` (*4.3.14/alpine/Dockerfile*)](https://github.com/plone/plone.docker/blob/master/4.3/4.3.14/alpine/Dockerfile)
 
+## Prerequisites
+
+Make sure you have Docker installed and running for your platform. You can download Docker from https://www.docker.com.
+
 ## Usage
 
 Choose either single Plone instance or ZEO cluster.



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