[MacPorts] #56054: Create internal infrastructure documentation

[MacPorts]

#56054: Create internal infrastructure documentation
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 Reporter:  neverpanic      |      Owner:
     Type:  enhancement     |     Status:  new
 Priority:  Normal          |  Milestone:
Component:  server/hosting  |    Version:
 Keywords:                  |       Port:
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 We should document how our infrastructure is set up and configured. Create
 a space private to the infrastructure team (possibly private GitHub
 repositories, would have to ask GitHub support to sponsor those) and
 document our current server infrastructure.

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Ticket URL: <https://trac.macports.org/ticket/56054>
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