Refactor GitHub Actions workflow to install LaTeX dependencies and build document directly, updating artifact upload step

.github/workflows/main.yml

@@ -9,13 +9,13 @@ on:
 jobs:
   build_latex:
     runs-on: ubuntu-latest
-    container: 
+    container: ubuntu:latest
+
     steps:
       - name: Install Node.js
         run: |
-          apt update && apt install -y curl
           curl -fsSL https://deb.nodesource.com/setup_20.x | sudo bash - 
-          apt install -y nodejs
+          sudo apt-get install -y nodejs
 
       - name: Set up Git repository
         uses: actions/checkout@v4.2.2