streamlined docker compose for Lemmy

I am working on writing up some quality help/instructions for Lemmy instance admins. This is targeted toward those that are newer to Lemmy and Docker, but even those that know a thing or two might learn something from me. I have been a sysadmin for over 20 years, so I know some things.

I thought I'd share the first complete page I have written. I'd love some feedback if you have any to share.

Be seeing you.

P.S. I frequent the Lemmy Admin matrix chat and I moderate the Install Support channel. Stop by if you have questions! https://matrix.to/#/#lemmy-support-new-instance:discuss.online