Dham/fix notebooks (#4323)

---------

Co-authored-by: Connor Ward <c.ward20@imperial.ac.uk>

Author: 2 people

.github/workflows/core.yml

@@ -144,7 +144,7 @@ jobs:
             $(python3 ./firedrake-repo/scripts/firedrake-configure --arch ${{ matrix.arch }} --show-system-packages)
           apt-get -y install python3-venv
           : # Dependencies needed to run the test suite
-          apt-get -y install parallel
+          apt-get -y install fonts-dejavu graphviz graphviz-dev parallel poppler-utils
 
       - name: Install PETSc
         run: |

.gitignore

@@ -15,6 +15,7 @@ __pycache__/
 /demos/immersed_fem/immersed_domain.msh
 /docs/build/
 /docs/notebooks/.ipynb_checkpoints/
+/docs/notebooks/tape.pdf
 /docs/source/apt_deps.txt
 /docs/source/firedrake.rst
 /docs/source/firedrake.*.rst

docker/Dockerfile.firedrake

@@ -25,5 +25,5 @@ RUN pip install --verbose --src /opt \
 
 # Install some other niceties
 RUN apt-get update \
-    && apt-get -y install nano vim \
+    && apt-get -y install graphviz graphviz-dev nano vim \
     && rm -rf /var/lib/apt/lists/*