officially support postgres 18, add docs for volume mount change

Author: swiffer

lib/teslamate/database_check.ex

@@ -8,7 +8,8 @@ defmodule TeslaMate.DatabaseCheck do
 
   @version_requirements %{
     1600 => %{min_version: "16.7", min_version_num: 160_007},
-    1700 => %{min_version: "17.3", min_version_num: 170_003}
+    1700 => %{min_version: "17.3", min_version_num: 170_003},
+    1800 => %{min_version: "18.0", min_version_num: 180_000}
   }
 
   def check_postgres_version do
@@ -49,7 +50,7 @@ defmodule TeslaMate.DatabaseCheck do
          version_num: version_num
        }) do
     cond do
-      major > 1700 ->
+      major > 1800 ->
         IO.puts(
           "PostgreSQL version #{version} is not officially tested or supported yet. Use at your own risk."
         )

website/docs/installation/docker.md

@@ -40,14 +40,14 @@ Alternatively, you can use a reverse proxy (such as Traefik, Apache2 or Caddy) w
          - all
 
      database:
-       image: postgres:17
+       image: postgres:18
        restart: always
        environment:
          - POSTGRES_USER=teslamate
          - POSTGRES_PASSWORD=password #insert your secure database password!
          - POSTGRES_DB=teslamate
        volumes:
-         - teslamate-db:/var/lib/postgresql/data
+         - teslamate-db:/var/lib/postgresql
 
      grafana:
        image: teslamate/grafana:latest

website/docs/maintenance/upgrading_postgres.md

@@ -23,6 +23,18 @@ sidebar_label: Upgrading PostgreSQL
      image: postgres:xx
    ```
 
+   :::warning
+   When upgrading postgres to `postgres:18` ensure to change the volume mount as well!
+
+   ```yml {2}
+   database:
+     volumes:
+       - teslamate-db:/var/lib/postgresql
+   ```
+
+   details: https://hub.docker.com/_/postgres#pgdata
+   :::
+
    ```bash
    docker compose up -d database
    ```