Do not include vendor/bundle in GHA built PRs (#75)

* Only run CI when `docs/src` changed

https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions#onpushpull_requestpull_request_targetpathspaths-ignore

* Include language in PR title

* Ignore GHA generated Ruby files

The PRs generated by the GHA have some 400,000+ lines changed in them #71. That is because it 2,000+ files installed including all the gems installed and Ruby. This is definitively not what we want. This behavior is documented in https://github.com/ruby/setup-ruby/tree/v1/?tab=readme-ov-file#bundle-config that it will place the files in `vendor/bundle`. To exclude the directory, we can add it to our `.gitignore`.

Author: schneems

.github/workflows/rundoc-ci.yml

@@ -3,6 +3,9 @@ on:
   pull_request:
     branches:
       - main
+    paths:
+      - "docs/src/**"
+      - ".rundoc-workspace/**"
 jobs:
   test-rundoc:
     runs-on: ubuntu-latest

.github/workflows/rundoc-pr.yml

@@ -10,10 +10,6 @@ jobs:
     runs-on: pub-hk-ubuntu-24.04-ip
     env:
       BUNDLE_GEMFILE: .rundoc-workspace/Gemfile
-    strategy:
-      matrix:
-        lang: ["ruby", "dotnet", "nodejs", "python", "php", "go", "java_maven", "java_gradle", "scala"]
-      fail-fast: false
     steps:
       - name: Get token for GH application (Linguist)
         uses: actions/create-github-app-token@v1
@@ -33,19 +29,22 @@ jobs:
           bundler-cache: true # do run 'bundle install' and cache
       - uses: buildpacks/github-actions/[email protected]
 
-      # [CONFIG] add different languages set up here
-      - run: |
-          bundle exec rundoc docs/src/${{ matrix.lang }}/RUNDOC.md \
-            --on-success-dir docs/${{ matrix.lang }} \
-            --on-failure-dir docs/fail/${{ matrix.lang }} \
-            --force
+      - name: Run rundoc for all languages
+        run: |
+          langs=("ruby" "dotnet" "nodejs" "python" "php" "go" "java_maven" "java_gradle" "scala")
+          for lang in "${langs[@]}"; do
+            bundle exec rundoc docs/src/$lang/RUNDOC.md \
+              --on-success-dir docs/$lang \
+              --on-failure-dir docs/fail/$lang \
+              --force
+          done
         continue-on-error: true
       - name: Create Pull Request
         id: pr
         uses: peter-evans/create-pull-request@v7
         with:
           token: ${{ steps.generate-token.outputs.token }}
-          branch: rundoc-update-${{ matrix.lang }}
+          branch: rundoc-update
           delete-branch: true
           base: main
           commit-message: Update tutorials

.gitignore

@@ -1,3 +1,7 @@
 .DS_Store
 
 .rundoc-workspace/
+
+# Ignore GHA generated Ruby files
+# https://github.com/ruby/setup-ruby/tree/v1/?tab=readme-ov-file#bundle-config
+vendor/bundle