imp - Don't use Docker for docgen.yml

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This improves the performance of generating documentation.

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Type: imp
Breaking: False
Doc Required: False
Part: 1/1

.github/workflows/docgen.yml

@@ -13,15 +13,18 @@ jobs:
     name: "Make API Reference"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-        name: Fetching the KS source
+      - uses: actions/checkout@v4
+        name: Fetching the source
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
         with:
-          submodules: 'true'
-          ref: ${{ github.ref }}
-      - uses: "nunit/docfx-action@master"
-        name: Generating documentation
-        with:
-          args: DocGen/docfx.json
+          dotnet-version: '8.0.x'
+      - name: Setup DocFX
+        run: dotnet tool install --global docfx --version 2.75.2
+      - name: Solution Compilation
+        run: dotnet build --configuration Release
+      - name: Generating documentation
+        run: docfx DocGen/docfx.json
       - name: Saving changes to gh-pages
         uses: peaceiris/actions-gh-pages@v3
         with: