Chore: Migrate pr-docs pipeline to GHAs (#101982)

* baldmomma/ add pr-lint-build-docs.yml

* baldm0mma/ update codeowners

* baldm0mma/ remove superfluous command

* baldm0mma/ trigger

* baldm0mma/ update with heredoc format

* baldm0mma/ update content stash

* baldm0mma/ explore container for prod target

* baldm0mma/ update to use hugo directly

* baldm0mma/ clone the websote dir

* baldm0mma/ rebuild with docker

* baldm0mma/ docker run

* baldm0mma/ remove build trigger

* baldm0mma/ remove cue gen step that is covered elsewhere

.github/CODEOWNERS

@@ -791,6 +791,7 @@ embed.go @grafana/grafana-as-code
 /.github/workflows/pr-codeql-analysis-javascript.yml @DanCech
 /.github/workflows/pr-codeql-analysis-python.yml @DanCech
 /.github/workflows/pr-commands.yml @tolzhabayev
+/.github/workflows/pr-lint-build-docs.yml @grafana/docs-tooling
 /.github/workflows/pr-patch-check.yml @grafana/grafana-developer-enablement-squad
 /.github/workflows/pr-test-integration.yml @grafana/grafana-backend-group
 /.github/workflows/pr-backend-unit-tests.yml @grafana/grafana-backend-group

.github/workflows/pr-lint-build-docs.yml

@@ -0,0 +1,52 @@
+name: Documentation
+
+on:
+  pull_request:
+    paths:
+      - '*.md'
+      - 'docs/**'
+      - 'packages/**/*.md'
+      - 'latest.json'
+
+jobs:
+  docs:
+    name: Build & Verify Docs
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22.11.0'
+          cache: 'yarn'
+
+      - name: Install dependencies
+        run: yarn install --immutable
+
+      - name: Lint docs
+        run: yarn run prettier:checkDocs
+        env:
+          # Increase memory for prettier due to large number of files
+          NODE_OPTIONS: --max_old_space_size=8192
+
+      - name: Build docs website
+        run: |
+          # Create and start a container from the docs-base image in detached mode
+          docker run -d --name docs-builder grafana/docs-base:latest tail -f /dev/null
+          
+          # Create the directory structure inside the container
+          docker exec docs-builder mkdir -p /hugo/content/docs/grafana/latest
+          
+          # Create the _index.md file
+          docker exec docs-builder /bin/sh -c "echo -e '---\nredirectURL: /docs/grafana/latest/\ntype: redirect\nversioned: true\n---\n' > /hugo/content/docs/grafana/_index.md"
+          
+          # Copy the docs sources from the host to the container
+          docker cp docs/sources/. docs-builder:/hugo/content/docs/grafana/latest/
+          
+          # Run the make prod command inside the container
+          docker exec -w /hugo docs-builder make prod || echo "Build completed with warnings"
+          
+          # Clean up the container
+          docker rm -f docs-builder