fix: Add wrapper around script

[jeevithakannan2]

Pull Request

Title

Add a wrapper around the script to prevent execution when partially downloaded.

Type of Change

• Bug fix

Description

Don't depend on the user to use the correct flags for curl to protect against partial downloads.

The Nix package manager install script does the same:
https://nixos.org/nix/install

Issue related to PR

• Resolves Wrap start.sh code in curly braces to protect against partial downloads #348

Checklist

• My code adheres to the coding and style guidelines of the project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• My changes generate no errors/warnings/merge conflicts.

[nnyyxxxx]

Nice