Pruning all unused docker images, inclunding non dangling

README.md

@@ -5,7 +5,7 @@ Calls portainer's API and updates the images of all currently active stacks
 ## Usage
 Update configuration file with your portainer access token and the path of portainer compose directory
 
-After restarting all container, it prunes all unused images
+After restarting all container, it prunes all unused images, including non dangling ones
 
 You can then simply execute:
 

main.py

@@ -29,4 +29,4 @@ if __name__ == '__main__':
         if s['Status'] == 1:
             update_stack(s)
 
-    os.system('docker image prune -f')
+    os.system('docker image prune -fa')