Update docker.io/library/postgres Docker tag to v18

docker-compose.yml

@@ -2,10 +2,11 @@ name: authentik
 
 services:
   server:
-    image: ghcr.io/goauthentik/server:2025.10.1
+    image: ghcr.io/goauthentik/server:2025.8.3
     container_name: authentik_server
     depends_on:
       - db_pg17
+      - redis
     command: server
     restart: unless-stopped
     volumes:
@@ -18,6 +19,7 @@ services:
       - internal
       - proxy
     environment:
+      AUTHENTIK_REDIS__HOST: redis
       AUTHENTIK_POSTGRESQL__HOST: db_pg17
       AUTHENTIK_POSTGRESQL__NAME: file:///run/secrets/db_name
       AUTHENTIK_POSTGRESQL__USER: file:///run/secrets/db_user
@@ -30,10 +32,11 @@ services:
       - secret
 
   worker:
-    image: ghcr.io/goauthentik/server:2025.10.1
+    image: ghcr.io/goauthentik/server:2025.8.3
     container_name: authentik_worker
     depends_on:
       - db_pg17
+      - redis
     command: worker
     restart: unless-stopped
     # `user: root` and the docker socket volume are optional.
@@ -51,6 +54,7 @@ services:
     networks:
       - internal
     environment:
+      AUTHENTIK_REDIS__HOST: redis
       AUTHENTIK_POSTGRESQL__HOST: db_pg17
       AUTHENTIK_POSTGRESQL__NAME: file:///run/secrets/db_name
       AUTHENTIK_POSTGRESQL__USER: file:///run/secrets/db_user
@@ -75,7 +79,7 @@ services:
       - mail_server
 
   ldap:
-    image: ghcr.io/goauthentik/ldap:2025.10.1
+    image: ghcr.io/goauthentik/ldap:2025.8.3
     container_name: authentik_ldap
     depends_on:
       - server
@@ -117,10 +121,29 @@ services:
       - db_user
       - db_pass
 
+  redis:
+    image: docker.io/library/redis:alpine
+    container_name: authentik_redis
+    command: --save 60 1 --loglevel warning
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD-SHELL", "redis-cli ping | grep PONG"]
+      start_period: 20s
+      interval: 30s
+      retries: 5
+      timeout: 3s
+    volumes:
+      - redis:/data
+    networks:
+      - internal
+
 volumes:
   db_pg17:
     driver: local
     name: authentik_db_pg17
+  redis:
+    driver: local
+    name: authentik_redis
 
 networks:
   internal: