diff --git a/Dockerfile b/Dockerfile
index d2f4e22..92c5242 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,8 @@ USER root
 # Update
 RUN apt-get update \
     && apt-get upgrade -y \
-    && apt-get install curl -y
+    && apt-get install curl -y \
+    && apt-get install -y ruby ruby-dev
 
 # Setup User "worker"
 RUN useradd --home /home/worker -M worker -K UID_MIN=10000 -K GID_MIN=10000 -s /bin/bash
diff --git a/README.md b/README.md
index ed38da6..29df741 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,11 @@
 # docker-rvm
+Docker container for RVM tests.
 
 [![Build Status](https://travis-ci.org/frodoslaw/docker-rvm.svg?branch=master)](https://travis-ci.org/frodoslaw/docker-rvm)
-.Docker container for RVM tests.
 
 ### Information about image
-1. OS: Ubuntu 14.04
-2. RUBY'S: 2.1.8, 2.2.0, 2.3.0(default), 2.4.0
+  1. OS: Ubuntu 14.04 LTS
+  2. RUBY'S: 2.1.8, 2.2.0, 2.3.0(default), 2.4.0
+
+### Usage
+    docker run -it --rm frodoslaw/docker-rvm /bin/bash