Jenkins script to upgrade a service on Rancher

rancher-update-service.sh

test -f JSON.sh || curl -O https://raw.githubusercontent.com/dominictarr/JSON.sh/master/JSON.sh
eval $(sed 's/^/MY_/' build.info)

ORIG_LAUNCH_CONFIG=$(cat my-app-service.json | bash ./JSON.sh | grep -F '["launchConfig"]' | sed -e 's/[^{]*//')
NEW_LAUNGH_CONFIG=$(echo $ORIG_LAUNCH_CONFIG |\
    sed "s/\(\"imageUuid\"\):\"[^\"]*\"/\1:\"docker:my-image:${MY_BUILD_NUMBER}\"/")
echo $NEW_LAUNGH_CONFIG |\
    xargs -d\\n -i_-_ curl -v -u "RANCHER_KEY:RANCHER_SECRET" \
    	-X POST -H 'Content-Type: application/json' \
    	-d '{"inServiceStrategy":{"launchConfig": _-_ }}' \
    	http://rancher-server/v1/services/1s10?action=upgrade
        
sleep 60

# confirm upgrade
curl -v -u "RANCHER_KEY:RANCHER_SECRET" \
	-X POST  http://rancher-server/v1/services/1s10?action=finishupgrade