Use updated golang version in dockerfile

[uruwhy]

Description

Dockerfile currently installs golang using apt, which only provides golang v1.19. To meet sandcat's minimum version of v1.24, the new Dockerfile will download and install golang v1.25 directly from the Go website.

Also fixes a bug where update-agents.sh contents are wiped during docker build.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Built docker locally and compiled agents using the update-agents.sh script

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Copilot]

Pull Request Overview

This PR updates the Golang installation in the Dockerfile from the outdated apt package (v1.19) to a direct download of v1.25 from the Go website to meet sandcat's minimum version requirement of v1.24. It also fixes a bug where the update-agents.sh script contents were being wiped during the Docker build process.

• Downloads and installs Golang v1.25 directly from the official Go website
• Fixes the update-agents.sh script corruption issue by creating a backup before processing
• Removes the outdated golang-go package from apt installation

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud