add postgres & an admin UI

docker-compose.yml

@@ -93,6 +93,23 @@ services:
       - elasticsearch
     restart: unless-stopped
 
+  db:
+    image: postgres
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+    # ports:
+    #   - 5432:5432
+    volumes:
+      - ./postgres/data:/var/lib/postgresql/data
+
+  adminer:
+    image: adminer
+    restart: unless-stopped
+    ports:
+      - 8080:8080
+
 networks:
   elk:
     driver: bridge