Rocket.Chat-upgrade.md

+## backup mongo DB
+
+```
+docker ps
+docker exec -it 71da07ceb777 /bin/bash
+mongodump
+exit
+docker cp 71da07ceb777:/dump /mnt/data/backups
+```
+
+
+## upgrade RC
+
+look up latest version available on dockerhub https://hub.docker.com/_/rocket-chat?tab=tags , select in Rancher `Image:rocketchat/rocket.chat:3.5.1` (all three digits) or `Image:rocketchat/rocket.chat:latest`
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