[Snyk] Security upgrade ruby from 2.6-slim to 2.7.8-slim

[NOUIY]

Snyk has created this PR to fix 2 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):

• code-samples/serving/hello-world/helloworld-ruby/Dockerfile

We recommend upgrading to ruby:2.7.8-slim, as this image has only 92 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
	Out-of-bounds Write SNYK-DEBIAN11-GLIBC-5927133	829
	Out-of-bounds Write SNYK-DEBIAN11-GLIBC-5927133	829
	Out-of-bounds Write SNYK-DEBIAN11-GLIBC-5927133	829
	Out-of-bounds Write SNYK-DEBIAN11-GLIBC-5927133	829
	Directory Traversal SNYK-DEBIAN11-DPKG-2847942	714

---

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:

🦉 Directory Traversal

[guardrails]

⚠️ We detected 1 security issue in this pull request:

Insecure Access Control (1)

Severity	Details	Docs
High	Title: Missing User Instruction docs-1/code-samples/serving/hello-world/helloworld-ruby/Dockerfile Line 3 in c32b52d FROM ruby:2.7.8-slim	📚

More info on how to fix Insecure Access Control in Dockerfile.

---

👉 Go to the dashboard for detailed results.

📥 Happy? Share your feedback with us.