Restore-instance-with-backup.md

+1. Copy the backup in to the server.
+
+2. Modify the `docker-compose.yml` file to add the backup instead the `import-postgres.sql` file:
+
+```bash
+      ...
+        #- /home/opencell/input-files/import-postgres.sql:/docker-entrypoint-initdb.d/import-postgres.sql
+      - /home/opencell/opencell_12-09-19.sql:/docker-entrypoint-initdb.d/opencell_test.sql
+      ...
+```
+
+3. Done!