attempt auto scaling runner

.github/workflows/build.yml

@@ -1,4 +1,4 @@
-name: build-on-hosted-runner
+name: build-on-self-hosted-runner
 on:
   workflow_dispatch:
   push:
@@ -11,56 +11,53 @@ on:
       - main
     paths-ignore:
       - "**.md"
-
     env:
       CARGO_TERM_COLOR: always
-
 jobs:
-  build-imbue-collator:
-    runs-on: self-hosted
+  create-runner:
+    runs-on: ubuntu-latest
+    outputs:
+      label: ${{ steps.create-runner.outputs.label }}
     steps:
-      - name: Checkout sources
-        uses: actions/checkout@v4
+      - id: create-runner
+        uses: related-sciences/[email protected]
         with:
-          submodules: recursive
+          token: ${{ secrets.GH_SA_TOKEN }}
+          project_id: ${{ secrets.GCP_PROJECT_ID }}
+          service_account_key: ${{ secrets.GCP_SA_KEY }}
+          image_project: ubuntu-os-cloud
+          image_family: ubuntu-2004-lts
+          machine_type: e2-highcpu-32
+#          disk_size: 200
+          machine_zone: us-central1-b
+          ephemeral: true
 
-#      - name: Install minimal nightly Rust
-#        uses: actions-rs/toolchain@v1
-#        with:
-#          profile: minimal
-#          toolchain: nightly-2023-05-22
-#          target: wasm32-unknown-unknown
-#          override: true
-#
-#      - name: Update submodules
-#        run: git submodule update --recursive --remote
-
-      - name: Run tests with benchmarks
-        run: cargo test --features runtime-benchmarks
-  clippy:
-      runs-on: self-hosted
-      steps:
       - uses: actions/checkout@v4
+
+      - name: Install Protobuf
+        run: sudo apt install protobuf-compiler
+
       - name: Install minimal nightly Rust
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
           toolchain: nightly-2023-05-22
           target: wasm32-unknown-unknown
           override: true
-      - name: Install clippy
-        run: rustup component add clippy
-      - name: Ensure executable
-        run: chmod +x ./ci/jobs/clippy.sh
-      - name: Run clippy
-        run: ./ci/jobs/clippy.sh
-  rustfmt:
-    runs-on: self-hosted
-    steps:
-    - uses: actions/checkout@v4
-    - name: Install rustfmt
-      run: rustup component add rustfmt
-    - name: Ensure executable
-      run: chmod +x ./ci/jobs/rustfmt.sh
-    - name: Run rustfmt
-      run: ./ci/jobs/rustfmt.sh
+          components: rustfmt, clippy
+
+      - name: 🫠 rustfmt 🫠
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --check
+
+      - name: Run tests with benchmarks
+        run: cargo test --features runtime-benchmarks
+
+      - name: Delete runner VM
+        if: always()
+        run: >
+          gcloud compute instances delete
+          gce-gh-runner-${{ github.run_id }}-${{ github.run_attempt }}
+          --quiet --zone us-central1-b