--- a
+++ b/.github/workflows/dags.yml
@@ -0,0 +1,59 @@
+---
+name: Generate DAG visualizations
+on:
+  workflow_dispatch:
+    inputs:
+      comments:
+        description: "Comments"
+
+jobs:
+  generate_dag:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.9"]
+
+    steps:
+      - name: Print author
+        run: |
+          echo "Author: ${{ github.triggering_actor }}"
+          echo "Comments: ${{ github.event.inputs.comments }}"
+
+      - name: Checkout main branch
+        uses: actions/checkout@v3
+        with:
+          ref: refs/heads/master
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install non-python dependencies
+        run: |
+          sudo apt-get install -y graphviz-dev graphviz
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install snakebids
+
+      - name: Set-up env for hippunfold
+        run: |
+          echo "HIPPUNFOLD_CACHE_DIR=`pwd`/test_data/fake_models" >> $GITHUB_ENV
+          echo "HIPPUNFOLD=./hippunfold/run.py" >> $GITHUB_ENV
+
+      - name: Generate rulegraph single T2w bids
+        run: |
+          $HIPPUNFOLD test_data/bids_singleT2w test_out participant -np --modality T2w --rulegraph | dot -Tsvg > docs/images/rulegraph_T2w.svg
+
+      - name: Commit updates
+        run: |
+          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git config --local user.name "github-actions[bot]"
+          git diff-index --quiet HEAD || git add docs/images || commit -m "Add updated dags [skip ci]"
+
+      - name: Push changes
+        uses: ad-m/github-push-action@v0.8.0
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}