Move dox build to GitHub actions

.github/workflows/ci-suite.yml

@@ -66,6 +66,50 @@ jobs:
         fi
         exit $retval
 
+  dox-build:
+    name: Build Doxygen Site
+    runs-on: ubuntu-latest
+    env:
+      DOXDIR: ~/tgsdox
+    steps:
+      - name: Install Graphviz
+        run: apt-get install graphviz
+
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Patch Doxyfile
+        run: |
+          VERSION=$(cat "build/Version.props" | grep -oPm1 "(?<=<TgsCoreVersion>)[^<]+")
+          echo -e "\nPROJECT_NUMBER = $VERSION\nINPUT = .\nOUTPUT_DIRECTORY = $DOXDIR\nPROJECT_LOGO = ./build/tgs.ico\nHAVE_DOT=YES" >> "docs/Doxyfile"
+
+      - name: Prep gh-pages Repository
+        if: github.event_name == 'push' && github.ref == 'dev'
+        run: |
+          git clone -b gh-pages --single-branch "https://git@github.com/tgstation/tgstation-server" "$DOXDIR"
+          rm -r "$DOXDIR/*"
+
+      - name: Doxygen Build
+        uses: mattnotmitt/doxygen-action@v1
+        with:
+          doxyfile-path: 'docs/Doxyfile'
+
+      - name: gh-pages push
+        if: github.event_name == 'push' && github.ref == 'dev'
+        run: |
+          cd $DOXDIR
+          git config --global push.default simple
+          git config user.name "tgstation-server"
+          git config user.email "tgstation-server@tgstation13.org"
+          echo '# THIS BRANCH IS AUTO GENERATED BY GITHUB ACTIONS' > README.md
+
+          # Need to create a .nojekyll file to allow filenames starting with an underscore
+          # to be seen on the gh-pages site. Therefore creating an empty .nojekyll file.
+          echo "" > .nojekyll
+          git add --all
+          git commit -m "Deploy code docs to GitHub Pages for Travis build $TRAVIS_BUILD_NUMBER" -m "Commit: $TRAVIS_COMMIT"
+          git push -f "https://${{ secrets.GITHUB_TOKEN }}}@$GITHUB_URL" 2>&1 | /dev/null
+
   docker-build:
     name: Build Docker Image
     runs-on: ubuntu-latest