Install mozilla-django-oidc in docker container

Signed-off-by: Sjoerd Simons <sjoerd@collabora.com>

docker/collabora/Dockerfile

@@ -31,8 +31,13 @@ COPY docker/collabora/lava-dpkg.cfg /etc/dpkg/dpkg.cfg.d/lava
 RUN apt update && \
     apt install -y --no-install-recommends \
         /*.deb \
-        wait-for-it && \
+        wait-for-it \
+        python3-pip \
+        python3-requests \
+        python3-josepy \
+        python3-cryptography && \
     rm /*deb
+RUN pip3 install --no-deps mozilla-django-oidc=="2.0.0"
 
 # Logging env
 COPY docker/collabora/logging_env.yaml /