RHOAIENG-16568: [Bug] Unable to download notebook as a PDF from JupyterLab Workbenches

jupyter/minimal/ubi9-python-3.11/Dockerfile.cpu

@@ -19,10 +19,12 @@ RUN pip install --no-cache-dir -U "micropipenv[toml]"
 
 # Install the oc client
 RUN curl -L https://mirror.openshift.com/pub/openshift-v4/$(uname -m)/clients/ocp/stable/openshift-client-linux.tar.gz \
-        -o /tmp/openshift-client-linux.tar.gz && \
+    -o /tmp/openshift-client-linux.tar.gz && \
     tar -xzvf /tmp/openshift-client-linux.tar.gz oc && \
     rm -f /tmp/openshift-client-linux.tar.gz
 
+
+
 ####################
 # jupyter-minimal  #
 ####################
@@ -45,6 +47,16 @@ WORKDIR /opt/app-root/bin
 
 COPY ${JUPYTER_REUSABLE_UTILS} utils/
 
+USER 0
+
+# TexLive dependency for PDF export
+RUN ./utils/install_tex_live.sh
+
+ENV PATH="/usr/local/texlive/2025/bin/x86_64-linux:$PATH"
+
+
+USER 1001
+
 COPY ${MINIMAL_SOURCE_CODE}/Pipfile.lock ${MINIMAL_SOURCE_CODE}/start-notebook.sh ./
 
 # Install Python dependencies from Pipfile.lock file
@@ -55,12 +67,14 @@ RUN echo "Installing softwares and packages" && \
     jupyter labextension disable "@jupyterlab/apputils-extension:announcements" && \
     # Replace Notebook's launcher, "(ipykernel)" with Python's version 3.x.y \
     sed -i -e "s/Python.*/$(python --version | cut -d '.' -f-2)\",/" /opt/app-root/share/jupyter/kernels/python3/kernel.json && \
+    # copy jupyter configuration
+    cp /opt/app-root/bin/utils/jupyter_server_config.py /opt/app-root/etc/jupyter && \
     # Fix permissions to support pip in Openshift environments \
     chmod -R g+w /opt/app-root/lib/python3.11/site-packages && \
     fix-permissions /opt/app-root -P && \
     # Apply JupyterLab addons \
     /opt/app-root/bin/utils/addons/apply.sh
-    
+
 WORKDIR /opt/app-root/src
 
 ENTRYPOINT ["start-notebook.sh"]

jupyter/minimal/ubi9-python-3.11/Dockerfile.cuda

@@ -165,6 +165,14 @@ WORKDIR /opt/app-root/bin
 
 COPY ${JUPYTER_REUSABLE_UTILS} utils/
 
+USER 0
+
+# TexLive dependency for PDF export
+RUN ./utils/install_tex_live.sh
+ENV PATH="/usr/local/texlive/2025/bin/x86_64-linux:$PATH"
+
+USER 1001
+
 COPY ${MINIMAL_SOURCE_CODE}/Pipfile.lock ${MINIMAL_SOURCE_CODE}/start-notebook.sh ./
 
 # Install Python dependencies from Pipfile.lock file

jupyter/minimal/ubi9-python-3.11/Dockerfile.rocm

@@ -79,6 +79,14 @@ WORKDIR /opt/app-root/bin
 
 COPY ${JUPYTER_REUSABLE_UTILS} utils/
 
+USER 0
+
+# TexLive dependency for PDF export
+RUN ./utils/install_tex_live.sh
+ENV PATH="/usr/local/texlive/2025/bin/x86_64-linux:$PATH"
+
+USER 1001
+
 COPY ${MINIMAL_SOURCE_CODE}/Pipfile.lock ${MINIMAL_SOURCE_CODE}/start-notebook.sh ./
 
 # Install Python dependencies from Pipfile.lock file

jupyter/utils/install_tex_live.sh

@@ -0,0 +1,7 @@
+echo "Installing TexLive to allow PDf export from Notebooks" && \
+curl -L https://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz -o install-tl-unx.tar.gz && \
+zcat < install-tl-unx.tar.gz | tar xf - && \
+cd install-tl-2* && \
+perl ./install-tl --no-interaction --scheme=scheme-small && \
+cd /usr/local/texlive/2025/bin/x86_64-linux && \
+./tlmgr install tcolorbox pdfcol adjustbox titling enumitem soul ucs collection-fontsrecommended

jupyter/utils/jupyter_server_config.py

@@ -0,0 +1,6 @@
+# https://github.com/opendatahub-io-contrib/workbench-images/blob/main/snippets/ides/1-jupyter/files/etc/jupyter_notebook_config.py
+c = get_config()
+# Disable unsupported exporters
+c.WebPDFExporter.enabled = False
+c.QtPDFExporter.enabled = False
+c.QtPNGExporter.enabled = False

tests/containers/workbenches/jupyterlab/jupyterlab_test.py

@@ -4,6 +4,8 @@
 
 import allure
 import requests
+import tempfile
+import pathlib
 
 from tests.containers import docker_utils
 from tests.containers.workbenches.workbench_image_test import WorkbenchContainer
@@ -54,3 +56,20 @@ def test_spinner_html_loaded(self, jupyterlab_image: docker.models.images.Image)
             assert 'class="pf-v6-c-spinner"' in response.text
         finally:
             docker_utils.NotebookContainer(container).stop(timeout=0)
+
+    @allure.issue("RHOAIENG-16568")
+    @allure.description("Check that PDF export is working correctly")
+    def test_pdf_export(self, jupyterlab_image: docker.models.images.Image) -> None:
+        container = WorkbenchContainer(image=jupyterlab_image, user=4321, group_add=[0])
+        test_file_name = "test.ipybn"
+        try:
+            container.start(wait_for_readiness=True)
+            with tempfile.TemporaryDirectory() as tmpdir:
+                tmpdir = pathlib.Path(tmpdir)
+                (tmpdir / test_file_name).write_text("{\"cells\": []}")
+                docker_utils.container_cp(container.get_wrapped_container(), src=str(tmpdir / test_file_name), dst=self.APP_ROOT_HOME)
+            exit_code, convert_output = container.exec(["jupyter", "nbconvert", test_file_name, "--to", "pdf"])
+            assert "PDF successfully created" in convert_output.decode()
+            assert 0 == exit_code
+        finally:
+            docker_utils.NotebookContainer(container).stop(timeout=0)