Update docker.io/library/postgres Docker tag to v15

#133

docs/guides/wiregueard-admin-vpn.md

@@ -0,0 +1,36 @@
+---
+title: "Wiregard Admin VPN"
+summary: How to configure your Wireguard client to access the Z9 network
+---
+
+# Onboarding
+
+tbd. where to add your key
+
+# Local Client Configuration
+
+## Example Config
+
+```
+[Interface]
+PrivateKey = YOUR_PRIVATE_KEY
+Address = 172.31.202.YOUR_IP/32
+
+[Peer]
+PublicKey = fmlxjh3iOfpgrHQQpK3dyOD0BvDppGCUkFuMSroqQR4=
+AllowedIPs = 10.89.208.0/20, 2a07:c481:1::/48, 212.12.48.126/32, 2a00:14b0:42:100::/56, 2a00:14b0:4200:3000::/64
+Endpoint = rt-wan.ccchh.net:51820
+```
+
+## AllowedIDs
+
+The following prefixes should be tunneled to gain access to both CCCHH Z9 resources as well as Chaosknoten. It is also possible to run a default route through wireguard, but please do not abuse this as a general VPN for purposes other than admin tasks.
+
+| Prefix | Description |
+|--|--|
+| [10.89.208.0/20](https://netbox.hamburg.ccc.de/ipam/prefixes/114/prefixes/) | prefix for CCCHH Z9 local networks |
+| [2a07:c481:1::/48](https://netbox.hamburg.ccc.de/ipam/prefixes/50/) | prefix for CCCHH Z9 local networks |
+| [212.12.48.126/32](https://netbox.hamburg.ccc.de/ipam/ip-addresses/30/) | public IP of chaosknoten |
+| [2a00:14b0:4200:3000::126:1/128](https://netbox.hamburg.ccc.de/ipam/ip-addresses/255/) | public IP of chaosknoten |
+| [2a00:14b0:42:100::/56/128](https://netbox.hamburg.ccc.de/ipam/prefixes/46/) | new IPv6 for VMs on chaosknoten |
+| [2a00:14b0:4200:3000::/64](https://netbox.hamburg.ccc.de/ipam/prefixes/36/) | old IPv6 for VMs on chaosknoten |

resources/chaosknoten/lists/docker_compose/compose.yaml.j2

@@ -62,7 +62,7 @@ services:
       - POSTGRES_DB=mailmandb
       - POSTGRES_USER=mailman
       - "POSTGRES_PASSWORD={{ secret__lists__postgres_password }}"
-    image: docker.io/library/postgres:12-alpine
+    image: docker.io/library/postgres:15-alpine
     volumes:
       - /opt/mailman/database:/var/lib/postgresql/data
     networks: