Correct port number
Correct port number

Looking at the commit where this was added (d11e9e9cbb97a7ec9729d637535d6b4e2fc96950),
the port number should actually have been `3068` to match the
value in the (then) startup.sh file and the (now) Dockerfile:
https://github.com/alphagov/content-store/blame/bbd42092fce84754c084f0c496240ec0741df34e/Dockerfile#L8

`3086` seems to be being used by the Transition app:
https://github.com/search?q=org%3Aalphagov+3086&type=code

alphagov/content-store,alphagov/content-store