gtristan commented on code in PR #87:
URL: 
https://github.com/apache/buildstream-plugins/pull/87#discussion_r2072330891


##########
src/buildstream_plugins/sources/docker.py:
##########
@@ -57,13 +57,44 @@
    #
    # **Since**: 2.0.1
 
+   # Specify the version to be reported as the *guess_version* when reporting
+   # SourceInfo
+   #
+   # Since: 2.5
+   #
+   version: 1.2
+
 Note that Docker images may contain device nodes. BuildStream elements cannot
 contain device nodes so those will be dropped. Any regular files in the /dev
 directory will also be dropped.
 
 See `built-in functionality doumentation
 
<https://docs.buildstream.build/master/buildstream.source.html#core-source-builtins>`_
 for
 details on common configuration options for sources.
+
+
+Reporting `SourceInfo 
<https://docs.buildstream.build/master/buildstream.source.html#buildstream.source.SourceInfo>`_
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+The docker source reports the URL of the docker registry as the *url*.
+
+Further, the docker source reports the ``SourceInfoMedium.OCI_IMAGE`` *medium* 
and
+the ``SourceVersionType.DIGEST`` *version_type*, for which it reports the 
content
+digest of the docker image as the *version*.
+
+Additionally, the docker source reports the docker image name through
+the ``image-name`` key of the *extra_data*.
+
+As such, after removing the scheme from the URL (i.e. remove ``https://``) the 
same docker

Review Comment:
   Disagree. The `docker` plugin uses the `https://` scheme for the default URL 
and communicates with that url using the [docker registry rest 
API](https://docker-docs.uclv.cu/registry/spec/api/) to communicate with that 
API.
   
   This docs segment on the other hand tries to provide useful information to 
the reader in order to inform them how they could get exactly the same image 
from the docker registry using the command line, I think it's still relevant to 
provide this docs segment, even if the actual URL used has a http(s) scheme.
   



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