Update pipeline

.gitea/workflows/build.yml

@@ -12,16 +12,14 @@ jobs:
     container: texlive/texlive:latest
     
     steps:
-    - name: Install node :(
-      run: |
-        apt update -y
-        apt install -y npm
+    - uses: xu-cheng/latex-action@v4
+      with:
+        root_file: |
+          file1.tex
+          file2.tex
 
     - name: Checkout repository
       uses: actions/checkout@v4
-        
-    - name: Build PDF
-      run: make pdf
       
     - name: Upload PDF artifact
       uses: actions/upload-artifact@v3