describe ContainerEngine volume and port formats

repo2docker/engine.py

@@ -80,7 +80,8 @@ class Container(ABC):
         str : The status of the container.
             Values include `created` `running` `exited`.
 
-        TODO: Does Docker have a fixed list of these?
+        Full list of statuses:
+        https://github.com/moby/moby/blob/v19.03.5/api/swagger.yaml#L4832
         """
 
 
@@ -182,12 +183,10 @@ class ContainerEngine(LoggingConfigurable):
 
         custom_context : bool
             If `True` fileobj is a Tar file object containing the build context
-            TODO: Specific to Docker
         dockerfile : str
             Path to Dockerfile within the build context
         fileobj : tarfile
             A tar file-like object containing the build context
-            TODO: Specific to Docker, other clients can untar this to a tempdir
         path : str
             path to the Dockerfile
 
@@ -270,15 +269,14 @@ class ContainerEngine(LoggingConfigurable):
         environment : list[str]
             List of environment variables in the form `ENVVAR=value`
         ports : dict
-            Container port bindings in the format expected by the engine
+            Container port bindings in the form generated by `repo2docker.utils.validate_and_generate_port_mapping`
-            TODO: Should we use a fixed format and convert to whatever's required by the engine?
+            https://github.com/jupyter/repo2docker/blob/0.11.0/repo2docker/utils.py#L95
         publish_all_ports : bool
             If `True` publish all ports to host
         remove : bool
             If `True` delete container when it completes
         volumes : dict
-            Volume bindings in the format expected by the engine
+            Volume bindings in the form `{src : dest}`
-            TODO: Should we use a fixed format and convert to whatever's required by the engine?
 
         Returns
         -------