EHD-1057: Simplify hosting: Use GitHub Actions WIP

.github/workflows/build-and-deploy-all-environments.yml

@@ -0,0 +1,17 @@
+name: 'Build, Deploy (all environments)'
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - 'main'
+
+concurrency: ${{ github.workflow }}  # Prevents more than one instance of this workflow running at the same time
+
+jobs:
+  build:
+    name: 'Build'
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Code'
+        uses: actions/checkout@v4