fix(actions): pin exact commits instead of using mutable tags

[TamaraFinogina]

GitHub security recommendation is to pin reference to a full 40-character commit SHA instead of using tags, e.g., uses: actions/checkout@8ade135

This is done to avoid possible supply chain attacks, which could result in token exposure.

Summary by CodeRabbit

• Chores
  • Pinned build, deployment, testing, and code-analysis automation actions to specific versions.
  • Preserved existing build, deployment, test, and analysis workflows while improving execution consistency and security.

[coderabbitai]

📝 Walkthrough

Walkthrough

GitHub Actions references across build, deployment, pre-build, test, and SonarCloud workflows are changed from version tags or unpinned references to specific commit SHAs. Existing workflow commands, inputs, and job behavior remain unchanged.

Changes

CI action pinning

Layer / File(s)	Summary
Build and deployment action pinning .github/workflows/build-and-deploy.yml	Build, checkout, Docker, and kubectl actions use pinned commit SHAs while retaining existing commands and inputs.
Validation and analysis action pinning .github/workflows/pre-build.yml, .github/workflows/run-tests.yml, .github/workflows/sonar-analysis.yml	Checkout, Node setup, and SonarQube scan actions use pinned commit SHAs in preparation, testing, and analysis workflows.

Estimated code review effort: 1 (Trivial) | ~5 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: pinning GitHub Actions to exact commits instead of mutable tags.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch pin_actions

---

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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

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.github/workflows/build-and-deploy.yml:
- Line 10: Disable credential persistence for both checkout steps in the
workflow by adding persist-credentials: false, and apply the same setting to
every other actions/checkout step introduced in this PR unless a later step
requires authenticated Git access.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 3db522c9-7041-4023-9040-9f463e2cfa56

📥 Commits

Reviewing files that changed from the base of the PR and between c522624 and 91b3468.

📒 Files selected for processing (4)

• .github/workflows/build-and-deploy.yml
• .github/workflows/pre-build.yml
• .github/workflows/run-tests.yml
• .github/workflows/sonar-analysis.yml

[coderabbitai]

🔒 Security & Privacy | 🟠 Major | ⚡ Quick win

🧩 Analysis chain

🏁 Script executed:

#!/bin/bash
set -euo pipefail

git ls-files .github/workflows
echo
echo "== build-and-deploy.yml =="
cat -n .github/workflows/build-and-deploy.yml | sed -n '1,220p'

echo
echo "== checkout usage across workflow files =="
rg -n "actions/checkout|persist-credentials|GITHUB_TOKEN" .github/workflows -S

Repository: internxt/mail-server

Length of output: 3027

---

🏁 Script executed:

#!/bin/bash
set -euo pipefail

echo "== Docker and ignore files =="
git ls-files | rg '(^|/)(Dockerfile|\.dockerignore|dockerignore)$|^\.github/workflows/.*\.yml$' -n

echo
echo "== .dockerignore =="
for f in .dockerignore Dockerfile ./.dockerignore ./Dockerfile; do
  if [ -f "$f" ]; then
    echo "--- $f"
    cat -n "$f" | sed -n '1,220p'
    echo
  fi
done

echo "== workflow files using checkout / git / github token =="
for f in .github/workflows/*.yml; do
  echo "--- $f"
  rg -n "actions/checkout|persist-credentials|git |GITHUB_TOKEN|github.token|checkout@" "$f" -n -S || true
done

Repository: internxt/mail-server

Length of output: 2910

---

🏁 Script executed:

#!/bin/bash
set -euo pipefail

for f in .github/workflows/pre-build.yml .github/workflows/run-tests.yml .github/workflows/sonar-analysis.yml; do
  echo "== $f =="
  cat -n "$f" | sed -n '1,220p'
  echo
done

Repository: internxt/mail-server

Length of output: 4320

---

Disable checkout credential persistence. actions/checkout leaves GITHUB_TOKEN in .git/config by default, so set persist-credentials: false on both checkouts here and on the other checkout steps in this PR unless a later step needs authenticated git access.

🧰 Tools

🪛 zizmor (1.26.1)

[warning] 9-10: credential persistence through GitHub Actions artifacts (artipacked): does not set persist-credentials: false

(artipacked)

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In @.github/workflows/build-and-deploy.yml at line 10, Disable credential
persistence for both checkout steps in the workflow by adding
persist-credentials: false, and apply the same setting to every other
actions/checkout step introduced in this PR unless a later step requires
authenticated Git access.

Source: Linters/SAST tools