the main difference between CMD and ENTRYPOINT is added

Read Me.txt

+ENTRYPOINT is the process that’s executed inside the container.
+CMD is the default set of arguments that are supplied to the ENTRYPOINT process.
+
+CMD is easily overridden by appending your own arguments to the docker run command.
+
+when wwe don't use ENTRYPOINT , it is set to default value : /bin/sh -c
+
+so it is very important in many scenarios:
+let's say we have an image in a certain directory there is the application we want to start.
+each application has a unique argument(s) to pass (port number , credentials , commands ...)
+then we set entry point to the path of the app to start it (execute it).
+then in cmd we specify the arguments we want to pass.
+so if we need to change the arguments according to our needs we only need to modify them in the 'docker run' command.
+which makes the containers more flexible.
\ No newline at end of file