Need to add other steps before deployment.

.github/workflows/deploy.yml

@@ -8,15 +8,29 @@ jobs:
     deploy:
         runs-on: ubuntu-latest
         steps:
-              - name: Commit poster PDF
-                uses: EndBug/add-and-commit@v9
-                with:
-                  add: 'poster.pdf'
-                  author_name: 'GitHub Actions'
-                  message: 'Add poster.pdf at ${{ github.sha }}'
+            - uses: actions/checkout@v4
+            - uses: awalsh128/cache-apt-pkgs-action@latest
+              with:
+                packages: libssl-dev
 
-              - name: Deploy html to gh-pages
-                uses: JamesIves/[email protected]
-                with:
-                  branch: gh-pages
-                  folder: ${{github.workspace}}/website
+            - uses: r-lib/actions/setup-r@v2
+            - uses : r-lib/actions/setup-pandoc@v1
+              with:
+                r-version: '4.1.0'
+                pandoc-version: '2.14'
+
+            - name: Build the poster
+              run: make install && make all && mkdir website && mv poster.html website/index.html && touch website/.nojekyll
+
+            - name: Commit poster PDF
+              uses: EndBug/add-and-commit@v9
+              with:
+                add: 'poster.pdf'
+                author_name: 'GitHub Actions'
+                message: 'Add poster.pdf at ${{ github.sha }}'
+
+            - name: Deploy html to gh-pages
+              uses: JamesIves/[email protected]
+              with:
+                branch: gh-pages
+                folder: ${{github.workspace}}/website