Rustdoc job

.github/workflows/rustdoc.yaml

@@ -0,0 +1,36 @@
+name: rustdoc
+on:
+  pull_request:
+    types: [closed]
+    branches:
+    - master
+
+jobs:
+  rustdoc:
+    runs-on: ubuntu-latest
+    if: github.event.pull_request.merged == true
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Install & display rust toolchain
+      run: rustup show
+
+    - name: Check targets are installed correctly
+      run: rustup target list --installed
+
+    - name: Build Documentation
+      run: cargo doc --no-deps
+
+    - name: Push index.html
+      run: echo "<meta http-equiv=\"refresh\" content=\"0; URL='./astar_collator/index.html'\" />" > ./target/doc/index.html
+
+    - name: Push CNAME
+      run: echo "crates.astar.network" > ./target/doc/CNAME
+
+    - name: Deploy Docs
+      uses: peaceiris/actions-gh-pages@v3
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_branch: gh-pages
+        publish_dir: ./target/doc