update script for emby docker

update_emby.sh

#!/bin/bash
running=$(docker ps | grep emby | awk '{print $1}')
echo $running
docker_image=emby/embyserver
docker_repository=https://registry.hub.docker.com/v2/repositories/emby/embyserver/tags/
date_hub=$(curl -s -S $docker_repository | jq '.results[] | select(.name == "latest") | .last_updated' | sed 's/\"//g' | cut -c 1-10)

echo "build date from Docker hub:" $date_hub

date_image=$(docker inspect $docker_image | jq '.[] .Created' | sed 's/\"//g' | cut -c 1-10)
echo "Build date from local image:" $date_image

if [ "$date_image" == "$date_hub" ]; then
 echo "all is well"

else

docker pull $docker_image:latest

for run in {1,2}
do
timestamp=$(date | md5sum | cut -c 1-15)
docker run -d --name emby.$timestamp -v /configdir/:/config -P -v /mediafiles/:/media:ro --restart always emby/embyserver
done
docker kill $running && docker rm $running
docker rmi -f $(docker images | grep "<none>" | awk "{print \$3}")
fi