Add the bare metal submit workflow from the docs

Author: epompeii

.github/workflows/pr_bare_metal_benchmarks.yml

@@ -0,0 +1,31 @@
+on:
+  pull_request:
+    types: [opened, reopened, edited, synchronize]
+
+jobs:
+  submit_pr_benchmarks:
+    name: Submit PR Benchmarks to Bencher Bare Metal
+    # DO NOT REMOVE: For handling Fork PRs see Pull Requests from Forks
+    if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
+    permissions:
+      checks: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: bencherdev/bencher@main
+      - name: Submit PR Benchmarks with Bencher
+        run: |
+          bencher run \
+          --project example \
+          --key '${{ secrets.BENCHER_API_KEY }}' \
+          --branch "$GITHUB_HEAD_REF" \
+          --start-point "$GITHUB_BASE_REF" \
+          --start-point-hash '${{ github.event.pull_request.base.sha }}' \
+          --start-point-clone-thresholds \
+          --start-point-reset \
+          --adapter json \
+          --image example:latest \
+          --detach \
+          --github-actions '${{ secrets.GITHUB_TOKEN }}' \
+          --ci-callback-token '${{ secrets.BENCHER_CALLBACK_TOKEN }}' \
+          mock

README.md

@@ -12,6 +12,8 @@ The `.github` directory contains example workflows from [how to use Bencher in G
   - [Track benchmarks](.github/workflows/fork_pr_benchmarks_track.yml)
   - [Archive branches for closed pull requests from forks](.github/workflows/fork_pr_benchmarks_closed.yml)
 - Benchmark pull requests on Bare Metal
+  - [Submit benchmarks as Jobs](.github/workflows/pr_bare_metal_benchmarks.yml)
   - [Post results of finished Jobs to pull requests](.github/workflows/pr_bare_metal_benchmarks_attach.yml)
 
 These examples use the [Bencher CLI GitHub Action](https://github.com/marketplace/actions/bencher-cli).
+The bare metal example's benchmark Image is the [Bencher CLI image](https://github.com/bencherdev/bencher/pkgs/container/bencher), so its benchmark command is `mock`.