Request a login (username and password) for the Rentouch-Docker-Hub from Rentouch if you do not already have one.
docker login harbor3.piplanning.io
If your server does not have a connection to the internet:
Install the updated offline installable images
Request a download link from rentouch for the updated .tar archived docker images.
Move the .tar archive to the server on which you are installing pi-server.
Input the command:(this may take a few minutes..)
docker load -i pi-server-images_2.15.0.tar
Update PI-Server config files
Stop the server
cd pi-server-docker
docker-compose down
Check that you have docker >=20.10.16
docker --version
On the host-system download the newest version of the PI-Server docker archive and extract it:
cd ../
wget https://s3.eu-central-1.amazonaws.com/static-piplanning/releases/on-premise/pi-server-docker_2.15.0.tar
mkdir -p pi-server-docker_2.15.0 && tar -xf pi-server-docker_2.15.0.tar -C pi-server-docker_2.15.0
cd pi-server-docker_2.15.0
Run the updater. You have to pass the path to your PI-Server folder (which contains the docker-compose and all the data) as the first argument.