Update Dockerfile

Dockerfile

@@ -11,7 +11,7 @@ RUN $CONDA_DIR/envs/renku/bin/pip install -U -e git+https://github.com/SwissData
 
 RUN sudo apt-get update
 RUN sudo apt-get install -y poppler-utils
-RUN sudo apt-get install vim
+RUN sudo apt-get install -y vim
 
 # install spacy models
 RUN python -m spacy download de_core_news_sm