diff --git a/Dockerfile/dockerfile_basics.md b/Dockerfile/dockerfile_basics.md
index 3ff97c3..bfc88b7 100644
--- a/Dockerfile/dockerfile_basics.md
+++ b/Dockerfile/dockerfile_basics.md
@@ -1,11 +1,11 @@
 # Dockerfile basics
 
 FROM 
-RUN - (Use RUN command only once, becuase each run command create a new lower)
+RUN --- (Use RUN command only once, becuase each run command create a new lower)
 COPY 
-ADD - (To download content inside the container) - Recheck this 
+ADD --- (To download content inside the container) - Recheck this 
 EXPOSE 
-CMD  - There can only be one CMD instruction in a Dockerfile. If you list more than one CMD then only the last CMD will take effect.
+CMD  --- There can only be one CMD instruction in a Dockerfile. If you list more than one CMD then only the last CMD will take effect.
 ENTRYPONT
 
 Create a 1st Docker file to setup tomcat. 
diff --git a/tomcat_install_on_centos b/Dockerfile/tomcat_install_on_centos
similarity index 100%
rename from tomcat_install_on_centos
rename to Dockerfile/tomcat_install_on_centos