update template creation instructions, use template created from them

.gitlab/ci_scripts/create_vps.sh

@@ -17,5 +17,5 @@ python3 -m openappstack $HOSTNAME create \
   --ssh-key-id $SSH_KEY_ID \
   --create-domain-records \
   --subdomain $SUBDOMAIN \
-  --disk-image-id '-7351' \
+  --disk-image-id '-7473' \
   --truncate-subdomain

CONTRIBUTING.md

@@ -8,7 +8,8 @@ for details.
 
 ## Preparing the development environment
 
-Make sure you have development dependencies installed in your development environment.
+Make sure you have development dependencies installed in your development
+environment.
 
 ```
 pip install -r requirements-dev.txt
@@ -80,8 +81,8 @@ use it. This is a manual process for now. Follow these steps:
    ```
    $ python3 -m openappstack <cluster> install --install-kubernetes --no-install-openappstack
    ```
-3. Log into your machine and delete the coredns and metrics-server deployments,
-   then delete the cluster data:
+3. Log into your machine and clean up the k3s server, then delete the cluster 
+   data:
    ```
    # Clean up running containers and firewall
    /usr/local/bin/k3s-killall.sh
@@ -94,8 +95,10 @@ use it. This is a manual process for now. Follow these steps:
    1. Change the Disk Label to something like `k3s-template`
    2. Set VPS to `-- not assigned --`
    3. Click 'make template'
-   4. Remember the disk image ID that you can see in the current URL as `id=...`
-   5. Click save
+   4. Choose "Linux Latest LTS" as the kernel
+   5. Choose OS type Debian 10
+   6. Remember the disk image ID that you can see in the current URL as `id=...`
+   7. Click save
 6. Change the `--disk-image-id` argument in `.gitlab/ci_scripts/create_vps.sh`
    to your current disk-image-id **with a minus in front of it**. This is
    because custom images are negative integers, whereas Greenhost's disk images