[Snyk] Security upgrade golang from 1.21 to 1.26rc2

[Dustin4444]

Snyk has created this PR to fix 4 vulnerabilities in the dockerfile dependencies of this project.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Snyk changed the following file(s):

• telegraf-build/scripts/Dockerfile

We recommend upgrading to golang:1.26rc2, as this image has only 110 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Link Following SNYK-DEBIAN12-GIT-6846203	582
	Link Following SNYK-DEBIAN12-GIT-6846203	582
	Detection of Error Condition Without Action SNYK-DEBIAN12-OPENSSH-8732597	333
	Inappropriate Encoding for Output Context SNYK-DEBIAN12-OPENSSH-1556053	290
	CVE-2025-6965 SNYK-DEBIAN12-SQLITE3-10753055	263

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• This PR was automatically created by Snyk using the credentials of a real user.

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[gemini-code-assist]

Summary of Changes

Hello @Dustin4444, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request, automatically generated by Snyk, aims to enhance the security posture of the project by upgrading the base Golang image used in the Dockerfile. The update from golang:1.21 to golang:1.26rc2 is intended to mitigate several known vulnerabilities, thereby reducing the project's attack surface and improving overall dependency health.

Highlights

• Golang Version Upgrade: The base Golang image in the telegraf-build/scripts/Dockerfile has been updated from 1.21 to 1.26rc2.
• Vulnerability Remediation: This upgrade addresses 4 identified vulnerabilities, including critical, medium, and low severities, as detected by Snyk, improving the project's security posture.

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[gemini-code-assist]

Code Review

This pull request from Snyk aims to fix security vulnerabilities by upgrading Golang from 1.21 to 1.26rc2. While the upgrade is necessary, the chosen version 1.26rc2 is a release candidate, which is not recommended for production environments due to potential instability. I have suggested changing this to a stable version, such as golang:1.25. For future consideration, you could also improve the Dockerfile by implementing a multi-stage build to create smaller and more secure final images.

[gemini-code-assist]

The updated base image golang:1.26rc2 is a release candidate (rc). Using release candidates in build environments is discouraged as they are not stable and may contain bugs. It's recommended to use the latest stable release to ensure reliability. If Go 1.26 is not yet fully released, golang:1.25 would be the latest stable version.

FROM golang:1.25