[Snyk] Security upgrade alpine from 3.20 to 3.21.2

[cruizen]

Snyk has created this PR to fix 0 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):

• dhcp-controller/dhcpserver/Dockerfile

We recommend upgrading to alpine:3.21.2, as this image has only 1 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

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Summary by Bito

Updated Alpine base image in DHCP server Dockerfile from 3.20 to 3.21.2 to address security vulnerabilities. This security-focused change was recommended by Snyk to maintain latest security patches. The new version 3.21.2 offers improved security with minimal known vulnerabilities.

Unit tests added: False

Estimated effort to review (1-5, lower is better): 1

[bito-code-review]

Code Review Agent Run #0d23cb

Actionable Suggestions - 1

• dhcp-controller/dhcpserver/Dockerfile - 1

  • Consider using image digest for immutability · Line 24-24

Review Details

• Files reviewed - 1 · Commit Range: 7a2ac69..7a2ac69

  • dhcp-controller/dhcpserver/Dockerfile
• Files skipped - 0
• Tools

  • Golangci-lint (Linter) - ✔︎ Successful
  • Whispers (Secret Scanner) - ✔︎ Successful
  • Detect-secrets (Secret Scanner) - ✔︎ Successful

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AI Code Review powered by

[bito-code-review]

Changelist by Bito

This pull request implements the following key changes.

Key Change	Files Impacted
Other Improvements - Docker Base Image Security Update	- Dockerfile - Upgraded Alpine base image from 3.20 to 3.21.2 for security improvements

[bito-code-review]

Consider using image digest for immutability

Consider pinning to a specific digest instead of using tag 3.21.2 for the Alpine base image to ensure immutable builds. Using image tags can lead to different image content being pulled over time even with the same tag.

Code suggestion

Check the AI-generated fix before applying

Suggested change

	FROM alpine:3.21.2
	FROM alpine@sha256:c5c5fda71656f07c8567adf9f16a94277e0fb9639045681c4cd8e75fb2ea7505

Code Review Run #0d23cb

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Is this a valid issue, or was it incorrectly flagged by the Agent?

• it was incorrectly flagged