added dependencies necessary for semantic parsing

src/Dockerfile

@@ -4,7 +4,8 @@ RUN apt-get update && \
     apt-get install -y \
         build-essential \
         python-opencv \
-        libpcl-dev
+        libpcl-dev \
+        x11-apps
 
 RUN pip install -U pip && \
     pip install -U \
@@ -14,6 +15,13 @@ RUN pip install -U pip && \
         matplotlib \
         nltk \
         setuptools \
-        pylint
+        pylint \
+        spacy \
+        pickle-mixin \
+        --upgrade setuptools \
+        --no-cache-dir tensorflow \
+        keras
+
+RUN python -m spacy download en_core_web_sm
 
 CMD ["/bin/bash"]