[DB Secrets Configuration]Need to add Read Permission for server-key.pem file inside secrets folder for DB

[vsrambix]

Describe the bug
Getting error "Failed to setup SSL" during DB start up when the Read permission is not added to server-key.pem file of DB generated by demo/scripts

To Reproduce

1. Generate the Secrets using demo_ca.sh, web_csr_req.sh, user_csr_req.sh & keys_gen.sh.
2. Copy the secrets folder to demo/db path.
3. Start the DB container and observe the DB logs.

Expected behavior
DB should get started without any errors