docs: update readme for attaching containers

docs/tutorials/edx-platform.rst

@@ -128,16 +128,18 @@ After you implement and enable that plugin, ``tutor mounts list`` should display
 Debugging with breakpoints
 --------------------------
 
-To debug a local edx-platform repository, first, start development in detached mode (with ``-d``), add a `python breakpoint <https://docs.python.org/3/library/functions.html#breakpoint>`__ with ``breakpoint()`` anywhere in the code. Then, attach to the applicable service's container by running ``start`` (without ``-d``) followed by the service's name::
+To debug a local edx-platform repository, first, start development in detached mode (with ``-d``), add a `python breakpoint <https://docs.python.org/3/library/functions.html#breakpoint>`__ with ``breakpoint()`` anywhere in the code. Then, attach to the applicable service's container by running ``attach`` followed by the service's name::
 
   # Start in detached mode:
   tutor dev start -d
 
   # Debugging LMS:
-  tutor dev start lms
+  tutor dev attach lms
 
   # Or, debugging CMS:
-  tutor dev start cms
+  tutor dev attach cms
+
+To detach from the container without shutting it down, use ``Ctrl+p`` followed with ``Ctrl+q``.
 
 Running edx-platform unit tests
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~