Aggiornare 'README.md'

README.md

@@ -32,22 +32,26 @@ docker save sortapp | gzip > sortapp.tar.gz
 ```
 
 ### Publish Docker Image on DockerHub
-Name your local images using:
+Re-tagging an existing local image: 
 
 ```
-By re-tagging an existing local image: 
-
-- docker tag sortapp <hub-user>/<repo-name>[:<tag>]
+docker tag sortapp <hub-user>/<repo-name>[:<tag>]
+```
 
 Login in DockerHub(use your Docker ID):
 
-- docker login
+```
+docker login
+```
 
 Now you can push this repository to the registry designated by its name or tag:
 
-- docker push <hub-user>/<repo-name>:<tag>
+```
+docker push <hub-user>/<repo-name>:<tag>
+```
 
 Then logout for security:
 
-- docker logout
+```
+docker logout
 ```