Inital commit with most of the completed code

docker-compose.yml

@@ -0,0 +1,11 @@
+version: '3.4'
+
+services:
+  postgres-testing:
+    image: postgres
+    environment:
+      POSTGRES_DB: test_db 
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+    ports:
+      - 5433:5432