chore(engine): use extended Docker image with PostgreSQL 15 by default (#463)

Description

Use the extended Docker image with PostgreSQL 15 by default

Related issue

#463

Examples

Checklist

• MR description has been reviewed
• MR changes are functionally tested
• MR does NOT have API/CLI changes OR there are API/CLI changes and they have been reviewed & DOCS ARE ADJUSTED (reference doc, etc)
• MR does NOT have UI changes OR there are UI changes and they have been reviewed & UX IS REVIEWED

Closes #463