add readme warning

README.md

@@ -118,6 +118,9 @@ terraform destroy -target module.warpsql-containers
 
 ### AWS 
 WarpSQL provides a streamlined approach to deploying and managing PostgreSQL databases on AWS EC2 instances, complete with a disaster recovery solution powered by Barman. 
+> **Warning**
+WarpSQL is a work in progress, and the current setup allows public SSH access to instances, which might not be secure.
+
 To get started, ensure you have your AWS credentials set up and Terraform installed.
 
 To launch WarpSQL with Barman, run:
@@ -133,6 +136,8 @@ During any subsequent launches of the WarpSQL instance, the data is recovered fr
 
 To specify the size of each instance's disk, provide the desired size in gigabytes to the respective variables: `warpsql_disk_size`, `ansible_disk_size`, and `barman_disk_size` in the terraform script.
 
+You can also set the password for the Postgres instance by using the `warpsql_password` variable in the Terraform script.
+
 The Barman images are based on [ubc/barman-docker](https://github.com/ubc/barman-docker). By default, Barman performs a base backup according to the cron schedule `0 4 * * *`. If you need to modify this schedule, refer to the environment variables documentation at https://github.com/ubc/barman-docker#environment-variables.
 
 ## Contribution