chore: refactor github actions

[NDStrahilevitz]

1. Explain what the PR does

d4365b8 feat(pr): variable runner label

Define runs-on label with a repository variable and a fallback.
This should allow us to override the runner label for PRs merging from
origin branches.

f09c5a1 chore: refactor github actions

Split up many of the jobs to modular actions.

2. Explain how to test it

Tests should run the same as before.

3. Other comments

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 30.51%. Comparing base (034cbab) to head (d4365b8).
⚠️ Report is 50 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5055      +/-   ##
==========================================
+ Coverage   29.72%   30.51%   +0.79%     
==========================================
  Files         234      232       -2     
  Lines       26186    25957     -229     
==========================================
+ Hits         7785     7922     +137     
+ Misses      17864    17496     -368     
- Partials      537      539       +2     

Flag	Coverage Δ
unit	30.51% <ø> (+0.79%)	⬆️
see 19 files with indirect coverage changes

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[Copilot]

Pull Request Overview

This PR refactors GitHub Actions workflow by extracting repeated setup and testing steps into modular composite actions. The changes improve maintainability by centralizing common logic and replacing inline bash matrix generation with a declarative JSON data file.

Key Changes

• Extracted repeated setup steps into reusable composite actions (setup-tracee-alpine, setup-tracee-ubuntu)
• Consolidated test execution logic into dedicated actions (run-unit-tests, run-integration-tests, run-e2e-tests)
• Replaced inline bash script for kernel matrix generation with a JSON data file and a dedicated composite action

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
.github/workflows/pr.yaml	Replaced inline setup and testing steps with calls to new composite actions across multiple jobs
.github/data/kernel-test-matrix.json	New JSON data file containing kernel test configurations (AMI IDs, architectures, names)
.github/actions/setup-tracee-alpine/action.yaml	New composite action for Alpine Linux environment setup (Git ownership, dependencies)
.github/actions/setup-tracee-ubuntu/action.yaml	New composite action for Ubuntu environment setup (Git installation, ownership, dependencies)
.github/actions/run-unit-tests/action.yaml	New composite action to run unit tests and upload codecov results
.github/actions/run-integration-tests/action.yaml	New composite action to run integration tests and upload codecov results
.github/actions/run-e2e-tests/action.yaml	New composite action for E2E tests with artifact handling and failure detection
.github/actions/generate-kernel-matrix/action.yaml	New composite action to generate kernel test matrix from JSON data file using jq

Comments suppressed due to low confidence (1)

.github/workflows/pr.yaml:490

• The matrix field 'sufix' is misspelled. It should be 'suffix' to follow standard English spelling. Note: This issue depends on fixing the spelling in the generate-kernel-matrix action.

      - graas_ami-${{ matrix.ami }}_${{ github.event.number }}${{ github.run_attempt }}-${{ github.run_id }}_${{ matrix.sufix }}

[Copilot]

The field 'sufix' is misspelled. It should be 'suffix' to follow standard English spelling.

Suggested change

	matrix=$(jq --arg ts "$timestamp" -c '[.[] | . + {sufix: $ts, job_name: .name}]' "$DATA_FILE")
	matrix=$(jq --arg ts "$timestamp" -c '[.[] | . + {suffix: $ts, job_name: .name}]' "$DATA_FILE")

[geyslan]

LGTM. Let's discuss next steps.

[NDStrahilevitz]

LGTM. Let's discuss next steps.

I will first try to see if the reusable workflows we've discussed offline fits the purpose here and fixes the relevant sync conflicts. If it does I will refactor this PR accordingly.