[S] Change in docker-playground[master]: README: add example: nightlies from different date

Attention is currently required from: osmith. laforge has posted comments on this change. ( https://gerrit.osmocom.org/c/docker-playground/+/31984 ) Change subject: README: add example: nightlies from different date ...................................................................... Patch Set 1: Code-Review+2 -- To view, visit https://gerrit.osmocom.org/c/docker-playground/+/31984 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: docker-playground Gerrit-Branch: master Gerrit-Change-Id: I1b21c90b13a11aa1e51ea337207775c729709676 Gerrit-Change-Number: 31984 Gerrit-PatchSet: 1 Gerrit-Owner: osmith <osmith(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: laforge <laforge(a)osmocom.org> Gerrit-Attention: osmith <osmith(a)sysmocom.de> Gerrit-Comment-Date: Mon, 20 Mar 2023 12:50:10 +0000 Gerrit-HasComments: No Gerrit-Has-Labels: Yes Gerrit-MessageType: comment