update README
diff --git a/Dockerfile b/Dockerfile
index 7127680..8bae175 100755
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,7 @@
 # To create the image execute:
 #     docker build -t mcjs:builder .
 #
-# To run tests:
+# To run the tests:
 #     docker run --rm mcjs:builder 
 #
 # To login to container:
diff --git a/README.md b/README.md
index 9f0354a..81f13e4 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@
 
 ## Install and run  tests
 
-[Node.js](https://nodejs.org/en/) (minimum v6.9.5) and
+[Node.js](https://nodejs.org/en/) (maximum v8.0.0) and
 [npm](https://www.npmjs.com/) are required in order to build the library and
 run the tests. Install also the node.js modules required with the command
 
@@ -64,6 +64,20 @@
 npm test
 ```
 
+## Docker
+
+To create the image execute;
+
+```
+docker build -t mcjs:builder .
+```
+
+To run the tests;
+
+```
+docker run --rm mcjs:builder 
+```
+
 ## Quick Start
 
 #### Elliptic Curves