[Snyk] Security upgrade alpine from latest to 3.23.3

[GlennPegden2]

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):

• hosts/DOS/ms-dos-6-22/Dockerfile

We recommend upgrading to alpine:3.23.3, as this image has only 0 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

---

Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

---

Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.

For more information:
🧐 View latest project report
📜 Customise PR templates
🛠 Adjust project settings
📚 Read about Snyk's upgrade logic

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Learn about vulnerability in an interactive lesson of Snyk Learn.

[Copilot]

Pull request overview

Pins the hosts/DOS/ms-dos-6-22 container base image to a specific Alpine release as part of a Snyk-driven base image upgrade.

Changes:

• Update Docker base image from alpine (implicit latest) to alpine:3.23.3.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

alpine:3.23.3 is a mutable tag and can be repointed over time, which reduces build reproducibility and weakens supply-chain guarantees. If you want fully reproducible builds, consider pinning the image by digest as well (e.g., FROM alpine:3.23.3@sha256:...).

Suggested change

	FROM alpine:3.23.3
	FROM alpine:3.23.3@sha256:REPLACE_WITH_ACTUAL_DIGEST