Update examples section according to the latest docker compose requirements.

Signed-off-by: Kaloyan Nikolov <tzerber@gmail.com>

.examples/docker-compose/insecure/postgres/apache/compose.yaml

@@ -0,0 +1,54 @@
+services:
+  db:
+    image: postgres:alpine
+    restart: always
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "50m"
+    volumes:
+      - db:/var/lib/postgresql/data:Z
+    env_file:
+      - db.env
+
+  redis:
+    image: redis:alpine
+    restart: always
+
+  app:
+    image: nextcloud:apache
+    restart: always
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "50m"
+    ports:
+      - 127.0.0.1:8080:80
+    volumes:
+      - nextcloud:/var/www/html:z
+    environment:
+      - MYSQL_HOST=db
+      - REDIS_HOST=redis
+    env_file:
+      - db.env
+    depends_on:
+      - db
+      - redis
+
+  cron:
+    image: nextcloud:apache
+    restart: always
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "50m"
+    volumes:
+      - nextcloud:/var/www/html:z
+    entrypoint: /cron.sh
+    depends_on:
+      - db
+      - redis
+
+volumes:
+  db:
+  nextcloud: