Add GHA to build shiny webR image

Author: georgestagg

.github/workflows/build-webr-image.yaml

@@ -0,0 +1,41 @@
+on:
+  push:
+    branches: [webr, webr-safari]
+  pull_request:
+    branches: [webr, webr-safari]
+  workflow_dispatch:
+
+name: Build wasm R package repository
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container: ghcr.io/r-wasm/webr:main
+    steps:
+    - uses: actions/checkout@v3
+    - name: Build wasm packages
+      uses: r-wasm/actions/build-wasm-packages@v1
+      with:
+        packages: .github/workflows/build-webr-packages
+        strip: c("demo", "doc", "examples", "help", "html", "include", "tests", "testthat", "vignette")
+  deploy:
+    name: Deploy to GitHub pages
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - uses: actions/checkout@v3
+      - name: Download wasm artifacts
+        uses: r-wasm/actions/download-wasm-artifacts@v1
+        with:
+          image-path: _site
+      - name: Upload Pages artifact
+        uses: actions/upload-pages-artifact@v2
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v2

.github/workflows/build-webr-packages

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+httpuv
+codetools
+renv
+shiny