added mysql user /uid and tests

Dockerfile

@@ -13,6 +13,7 @@ RUN ln -sf /usr/share/zoneinfo/EST5EDT /etc/localtime
 
 # install packages
 #RUN yum -y --disablerepo=epel --enablerepo=mysql56-community install mysql-server mysql
+RUN groupadd -g 27 -r mysql && useradd -u 27 -r -g mysql mysql
 RUN yum -y install Percona-Server-server-56
 ADD ./root/packages.sh /packages.sh
 RUN chmod 755 /packages.sh

spec/localhost/Dockerfile_spec.rb

@@ -34,10 +34,25 @@ def remove(options={}); end
     end
   end
 
+  describe "installs mysql group" do
+    describe group('mysql') do
+      it { should exist }
+    end
+    describe group('mysql') do
+      it { should have_gid 27 }
+    end
+  end
+
   describe "installs mysql user" do
-    describe user('root') do
+    describe user('mysql') do
       it { should exist }
     end
+    describe user('mysql') do
+      it { should belong_to_group 'mysql' }
+    end
+    describe user('mysql') do
+      it { should have_uid 27 }
+    end
   end
 
   describe "sets the timezone to EDT" do
@@ -46,7 +61,6 @@ def remove(options={}); end
     end
   end  
 
-
   describe 'Misc Settings' do
     describe command('mysql -V') do
       its(:stdout) { should include "Distrib 5.6" }