diff --git a/.gitea/workflows/demo.yaml b/.gitea/workflows/demo.yaml
index 0d90985..927947d 100644
--- a/.gitea/workflows/demo.yaml
+++ b/.gitea/workflows/demo.yaml
@@ -3,26 +3,10 @@ run-name: ${{ gitea.actor }} is testing out Gitea Actions 🚀
 on: [push]
 
 jobs:
-  Explore-Gitea-Actions:
-    runs-on: ubuntu-latest
-    steps:
-      - run: echo "🎉 The job was automatically triggered by a ${{ gitea.event_name }} event."
-      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by Gitea!"
-      - run: echo "🔎 The name of your branch is ${{ gitea.ref }} and your repository is ${{ gitea.repository }}."
-      - name: Check out repository code
-        uses: actions/checkout@v3
-      - run: echo "💡 The ${{ gitea.repository }} repository has been cloned to the runner."
-      - run: echo "🖥️ The workflow is now ready to test your code on the runner."
-      - name: List files in the repository
-        run: |
-          ls ${{ gitea.workspace }}
-      - run: echo "🍏 This job's status is ${{ job.status }}."
   build_latex:
     runs-on: ubuntu-latest
+    container:
+      image: aergus/latex
     steps:
       - name: Set up Git repository
-        uses: actions/checkout@v3
-      - name: Compile LaTeX document
-        uses: xu-cheng/latex-action@v3
-        with:
-          root_file: main.tex
+        run: latexmk main.tex
diff --git a/main.tex b/main.tex
new file mode 100644
index 0000000..03c1ea0
--- /dev/null
+++ b/main.tex
@@ -0,0 +1,7 @@
+\documentclass{article}
+
+
+\begin{document}
+  just a small test doc
+\end{document}
+