Remove unneeded files from gem

docker-compose.yml

@@ -0,0 +1,12 @@
+version: '3.6'
+
+services:
+  postgres:
+    image: postgres:12-alpine
+    environment:
+      POSTGRES_DB: paperclip_test
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: ""
+      POSTGRES_HOST_AUTH_METHOD: trust
+    ports:
+      - 5432:5432