Backup: `database-credentials.yaml` secret can't be created

Problem

During backup.sh, I have the following error message:

Error from server (BadRequest): error when creating "database-credentials.yaml": Secret in version "v1" cannot be handled as a Secret: json: cannot unmarshal number into Go struct field Secret.stringData of type string

The PGPORT is defined as an integer instead of a string.

Proposal

To make sure the PGPORT is quoted, we could use:

  PGPORT: {{ "%s" | format(dbvars.port) | tojson }}