feat(docker): add Docker Compose for PostgreSQL service

compose.yml

@@ -0,0 +1,18 @@
+volumes:
+  postgres_data:
+
+services:
+  db:
+    image: postgres:17.4
+    container_name: casino-db
+    restart: unless-stopped
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    environment:
+      POSTGRES_DB: postgresdb
+      POSTGRES_USER: postgres_user
+      POSTGRES_PASSWORD: postgres_pass
+    healthcheck:
+      test: "exit 0"
+    ports:
+      - "5432:5432"

docker/docker-compose.yml

@@ -1,49 +1,13 @@
 volumes:
-  keycloak_data:
-  postgres_data_keycloak_db:
-  postgres_data:
+  casino-db-data:
 
 services:
-  keycloak_lf12:
-    image: quay.io/keycloak/keycloak:23.0
-    volumes:
-      - keycloak_data:/opt/keycloak/data
-      - ./imports:/opt/keycloak/data/import
-    command:
-      - start-dev
-      - --import-realm
-    environment:
-      KC_DB: postgres
-      KC_DB_URL_HOST: keycloakdb_svr
-      KC_DB_URL_DATABASE: keycloakdb
-      KC_DB_PASSWORD: postgres_pass
-      KC_DB_USERNAME: postgres_user
-      KC_DB_SCHEMA: public
-      KEYCLOAK_ADMIN: admin
-      KEYCLOAK_ADMIN_PASSWORD: admin
-    ports:
-      - "9090:8080"
-    depends_on:
-      keycloakdb_svr:
-        condition: service_healthy
-
-  keycloakdb_svr:
+  db:
     image: postgres:17.4
+    container_name: casino-db
+    restart: unless-stopped
     volumes:
-      - postgres_data_keycloak_db:/var/lib/postgresql/data
-    environment:
-      POSTGRES_DB: keycloakdb
-      POSTGRES_USER: postgres_user
-      POSTGRES_PASSWORD: postgres_pass
-    healthcheck:
-      test: "exit 0"
-    ports:
-      - "9433:5432"
-
-  postgres_db:
-    image: postgres:17.4
-    volumes:
-      - postgres_data:/var/lib/postgresql/data
+      - casino-db-data:/var/lib/postgresql/data
     environment:
       POSTGRES_DB: postgresdb
       POSTGRES_USER: postgres_user