remove duplicated timestamp

Makefile

@@ -126,6 +126,7 @@ README_TAIL = `cat ./_README.md | sed -e '1,/%CONTAINERS_LIST%/d'`
 README_FOOTER = `echo "\n\r_Last update: \`date\`_\n"`
 update_readme:
 	@echo "$(README_HEAD)  \n\n - $(TOOLSET) \n $(README_TAIL) \n$(README_FOOTER)" > README.md
+	@git add README.md
 
 delete_dangling_images:
 	@echo "Removing dangling images"

README.md

@@ -9,12 +9,7 @@
 To build these images, clone this repository onto a machine with docker and make installed. Run `make` and all of the images will be built and installed as local docker images.  
 This file is automatically updated after execute `git commit` based on the content of file `_README.md` 
 
-### Tools available:
-
-
-
-
-_Last update: Thu May 30 15:37:41 CDT 2019_ 
+### Tools available:  
 
  - its-registry.unl.edu/unl-its/docker-ci/detect-secrets:latest
  - its-registry.unl.edu/unl-its/docker-ci/magento2-unit-test:latest
@@ -30,6 +25,6 @@ _Last update: Thu May 30 15:37:41 CDT 2019_
  - its-registry.unl.edu/unl-its/docker-ci/static-code-analysis:latest
  - its-registry.unl.edu/unl-its/docker-ci/static-code-analysis:php
  - its-registry.unl.edu/unl-its/docker-ci/static-code-analysis:python 
+    
 
-_Last update: Thu May 30 15:37:41 CDT 2019_ 
-
+_Last update: Thu May 30 16:29:28 CDT 2019_