Add section about Docker to README file

Dockerfile

@@ -6,7 +6,7 @@ ENV BOOTSTRAP_OPTS='-M'
 # Version of salt to install: stable or git
 ENV SALT_VERSION=stable
 
-ADD bootstrap-salt.sh /tmp/
+COPY bootstrap-salt.sh /tmp/
 
 # Prevent udev from being upgraded inside the container, dpkg will fail to configure it
 RUN echo udev hold | dpkg --set-selections

README.rst

@@ -497,4 +497,33 @@ Ubuntu box. First, install Vagrant, then:
 .. _Vagrant: http://www.vagrantup.com
 
 
+Running in Docker
+=================
+
+Also you are able to run and use Salt inside Docker_ container on Linux machine.
+Let's prepare Docker image with both Salt Master and Minion installed by the bootstrap script:
+
+.. code:: console
+
+  docker built -t local/salt-bootstrap .
+
+Start your new container with Salt services:
+
+.. code:: console
+
+  docker run --detach --name salt --hostname salt local/salt-bootstrap
+
+And finally "enter" the running container and make Salt fully operational:
+
+.. code:: console
+
+  docker exec -i -t salt /bin/bash
+  salt-key -A -y
+
+Salt is ready and working in the Docker container with Minion authenticated on Master.
+
+
+.. _Docker: https://www.docker.com/
+
+
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