rancher2-upgrade.sh

#!/bin/bash

export RANCHER_CONTAINER_ID=<>
export RANCHER_CURRENT_VERSION_TAG=v2.0.2
export UPCOMING_VERSION=v2.0.6

docker ps
docker stop $RANCHER_CONTAINER_ID

docker create --volumes-from $RANCHER_CONTAINER_ID \
--name rancher-data rancher/rancher:$RANCHER_CURRENT_VERSION_TAG

docker run  --volumes-from rancher-data -v $PWD:/backup \
alpine tar zcvf /backup/rancher-data-backup-$RANCHER_CURRENT_VERSION_TAG.tar.gz /var/lib/rancher

docker pull rancher/rancher:$UPCOMING_VERSION

docker run -d --volumes-from rancher-data --restart=unless-stopped \
-p 80:80 -p 443:443 rancher/rancher:$UPCOMING_VERSION