[MacPorts] #54449: py-dockerpy-creds @0.2.1 dependency for newer versions of py-docker

[MacPorts]

#54449: py-dockerpy-creds @0.2.1 dependency for newer versions of py-docker
--------------------------------+-------------------
  Reporter:  zdw                |      Owner:
      Type:  submission         |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:  2.4.1
Resolution:                     |   Keywords:
      Port:  py-dockerpy-creds  |
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Comment (by mf2k):

 Comments:
  - Can py36 be added? It should be added to py-docker too.
  - Change {{{depends_build}}} and {{{depends_lib}}} to {{{depends_build-
 append}}} and {{{depends_lib-append}}} to not overwrite portgroup
 dependencies.

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Ticket URL: <https://trac.macports.org/ticket/54449#comment:1>
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