docker: add docker-compose file with postgresql

docker/docker-compose.yml

@@ -0,0 +1,24 @@
+version: "3"
+
+volumes:
+  postgresql_data:
+    driver: local
+
+services:
+  postgresql:
+    image: bitnami/postgresql:latest
+    environment:
+      - POSTGRESQL_USERNAME=root
+      - POSTGRESQL_PASSWORD=123456
+      - POSTGRESQL_DATABASE=test
+    ports:
+      - 5432:5432
+    volumes:
+      - postgresql_data:/bitnami/postgresql
+  adminer:
+    image: adminer:latest
+    environment:
+      - ADMINER_DEFAULT_SERVER=localhost
+    ports:
+      - 8080:8080
+