ci: add workflow to check semantic pull requests

Signed-off-by: Emilien Escalle <emilien.escalle@escemi.com>

Author: neilime

.github/workflows/__test-action-docker-prune-pull-requests-image-tags.yml

@@ -34,7 +34,30 @@ jobs:
             }
 
             // Generate random PR tag
-            core.setOutput("tag", `pr-${1 + Math.floor(Math.random() * 210)}`);
+            let prNumber;
+            let attempt = 0;
+            while(!prNumber && attempt < 5) {
+              attempt++;
+              prNumber = 1 + Math.floor(Math.random() * 210);
+              try {
+                await github.rest.pulls.get({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  pull_number: prNumber,
+                });
+              } catch (error) {
+                if (error.status === 404) {
+                  prNumber = null; // PR does not exist, try again
+                } else {
+                  throw error; // Other errors
+                }
+              }
+            }
+            if (!prNumber) {
+              return core.setFailed("Failed to generate a valid pull request number after multiple attempts");
+            }
+
+            core.setOutput("tag", `pr-${prNumber}`);
 
             // Define expected packages
             const packages = [
@@ -127,7 +150,7 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Generate a image tag that should be deleted
+      - name: Generate an image tag that should be deleted
         env:
           BASE_IMAGE: ${{ needs.arrange-verify.outputs.base-image }}
           IMAGE_NAME: ${{ env.IMAGE_NAME }}
@@ -143,6 +166,7 @@ jobs:
       - id: prune-pull-requests-image-tags
         uses: ./actions/docker/prune-pull-requests-image-tags
         with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
           image: ${{ env.IMAGE_NAME }}
 
   assert:

.github/workflows/semantic-pull-request.yml

@@ -0,0 +1,18 @@
+---
+name: "Pull Request - Semantic Lint"
+
+on:
+  pull_request_target:
+    types:
+      - opened
+      - edited
+      - synchronize
+
+permissions: {}
+
+jobs:
+  main:
+    uses: hoverkraft-tech/ci-github-common/.github/workflows/semantic-pull-request.yml@5f11437c716059f30c635f90055060e4ef8b31a0 # 0.28.0
+    permissions:
+      contents: write
+      pull-requests: write

actions/docker/prune-pull-requests-image-tags/action.yml

@@ -25,7 +25,7 @@ inputs:
     default: "^pr-([0-9]+)(?:-|$)"
   github-token:
     description: |
-      GitHub token with the packages:read and packages:delete scopes.
+      GitHub token with the folowing scopes: `pull-requests:read`, `packages:read` and `packages:delete`.
       See https://docs.github.com/en/packages/learn-github-packages/about-permissions-for-github-packages#about-scopes-and-permissions-for-package-registries.
     default: ${{ github.token }}