diff --git a/.gitea/Containerfile b/.gitea/Containerfile
new file mode 100644
index 0000000..ba5c7bb
--- /dev/null
+++ b/.gitea/Containerfile
@@ -0,0 +1,9 @@
+FROM ghcr.io/catthehacker/ubuntu:act-latest
+
+RUN apt-get update && apt-get install -y texlive-xetex texlive-science texlive-fonts-extra
+RUN wget -P /usr/local/share/fonts https://github.com/CatharsisFonts/Cormorant/raw/refs/heads/master/fonts/ttf/CormorantGaramond-Regular.ttf && \
+    wget -P /usr/local/share/fonts https://github.com/CatharsisFonts/Cormorant/raw/refs/heads/master/fonts/ttf/CormorantGaramond-Bold.ttf && \
+    wget -P /usr/local/share/fonts https://github.com/CatharsisFonts/Cormorant/raw/refs/heads/master/fonts/ttf/CormorantGaramond-Italic.ttf && \
+    wget -P /usr/local/share/fonts https://github.com/CatharsisFonts/Cormorant/raw/refs/heads/master/fonts/ttf/CormorantGaramond-BoldItalic.ttf && \
+    wget -P /usr/local/share/fonts https://github.com/CatharsisFonts/Cormorant/raw/refs/heads/master/fonts/ttf/CormorantGaramond-Light.ttf
+RUN fc-cache -fv
diff --git a/.gitea/workflows/main.yaml b/.gitea/workflows/main.yaml
index 0228717..58dc9e2 100644
--- a/.gitea/workflows/main.yaml
+++ b/.gitea/workflows/main.yaml
@@ -6,32 +6,29 @@ on:
       - "**"
 
 jobs:
+  builder:
+    uses: karaolidis/workflows/.gitea/workflows/builder.yaml@main
+    with:
+      registry: git.karaolidis.com
+      username: ${{ github.repository_owner }}
+    secrets:
+      password: ${{ secrets.REGISTRY_PASSWORD }}
+
   release:
-    runs-on: ubuntu-latest
+    runs-on: nix
+    needs: builder
+    container:
+      image: ${{ needs.builder.outputs.tag }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
-
-      - name: Install LaTeX (XeLaTeX)
-        run: |
-          apt-get update
-          apt-get install -y texlive-xetex texlive-science texlive-fonts-extra
-
-          wget -P /usr/local/share/fonts https://github.com/CatharsisFonts/Cormorant/raw/refs/heads/master/fonts/ttf/CormorantGaramond-Regular.ttf
-          wget -P /usr/local/share/fonts https://github.com/CatharsisFonts/Cormorant/raw/refs/heads/master/fonts/ttf/CormorantGaramond-Bold.ttf
-          wget -P /usr/local/share/fonts https://github.com/CatharsisFonts/Cormorant/raw/refs/heads/master/fonts/ttf/CormorantGaramond-Italic.ttf
-          wget -P /usr/local/share/fonts https://github.com/CatharsisFonts/Cormorant/raw/refs/heads/master/fonts/ttf/CormorantGaramond-BoldItalic.ttf
-          wget -P /usr/local/share/fonts https://github.com/CatharsisFonts/Cormorant/raw/refs/heads/master/fonts/ttf/CormorantGaramond-Light.ttf
-          fc-cache -fv
+        uses: actions/checkout@v4
 
       - name: Compile PDF
-        run: |
-          xelatex main.tex
+        run: xelatex main.tex
 
       - name: Release
         uses: https://github.com/akkuman/gitea-release-action@main
         with:
-          name: "Release ${{github.sha}}"
-          tag_name: "release-${{github.sha}}"
-          files: |-
-            main.pdf
+          name: "Release ${{ github.sha }}"
+          tag_name: "release-${{ github.sha }}"
+          files: main.pdf