Update Dockerfile (renku version 0.3.2, french spacy)

Dockerfile

-FROM renku/singleuser:0.2.0
+FROM renku/singleuser:0.3.2
 
 # Uncomment and adapt if code is to be included in the image
 # COPY src /code/src
@@ -15,4 +15,5 @@ RUN sudo apt-get install -y vim
 
 # install spacy models
 RUN python -m spacy download de_core_news_sm
+RUN python -m spacy download fr_core_news_sm
 RUN python -m spacy download xx_ent_wiki_sm
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