Run demo GitHub Action in parallel (#2484)

* Run demo GitHub Action in parallel

* Fix path of action yml

* Move checkout to demo action

* Prettier format

* Specifying shell

* Try to fix uses

* Fix spelling issue

* Fix demo

* Downloading artifacts too unreliable

Building instead

* Re-name step

Re-use action elsewhere

.github/actions/install-and-build/action.yml

@@ -0,0 +1,12 @@
+name: Install dependencies and build ⚙️
+description: Install dependencies and build
+
+runs:
+    using: composite
+    steps:
+        - name: Install Dependencies
+          shell: bash
+          run: npm ci --force
+        - name: Build
+          shell: bash
+          run: npm run build

.github/actions/validate-docx/action.yml

@@ -0,0 +1,14 @@
+name: Extract and Validate Document ⚙️
+description: Extract the document and validate the XML against the schema.
+
+runs:
+    using: composite
+    steps:
+        - name: Extract Word Document
+          shell: bash
+          run: npm run extract
+        - name: Validate XML
+          uses: ChristophWurst/xmllint-action@v1
+          with:
+              xml-file: build/extracted-doc/word/document.xml
+              xml-schema-file: ooxml-schemas/microsoft/wml-2010.xsd

.github/workflows/default.yml

@@ -14,10 +14,7 @@ jobs:
         steps:
             - name: Checkout Repo
               uses: actions/checkout@master
-            - name: Install Dependencies
-              run: npm ci --force
-            - name: Build
-              run: npm run build
+            - uses: "./.github/actions/install-and-build"
             - name: Archive Production Artifact
               uses: actions/upload-artifact@master
               with: