some cleanup: configure data, requirements, and docker

docker/Dockerfile

 # ===========
 # base images
 # ===========
-FROM nvcr.io/nvidia/pytorch:19.09-py3
+FROM nvcr.io/nvidia/pytorch:19.10-py3
 
 
-# ===============
-# system packages
-# ===============
-RUN apt-get update && apt-get install -y \
-    bash-completion \
-    emacs \
-    git \
-    graphviz \
-    htop \
-    libopenexr-dev \
-    rsync \
-    wget \
-&& rm -rf /var/lib/apt/lists/*
-
-
-# ============
-# pip packages
-# ============
-RUN pip install --upgrade pip && \
-    pip install --upgrade setuptools
-COPY requirements.txt /tmp/
-RUN pip install --upgrade --ignore-installed -r /tmp/requirements.txt
-

docker/requirements.txt

-boto3
-google-cloud-language
-inflect
-nltk
-numpy
-pandas
-requests
-sentencepiece
-tensorflow
-tqdm

requirements.txt

-nltk>=3.4
-numpy>=1.15.4
-pandas>=0.24.0
-sentencepiece>=0.1.8
-tensorflow>=1.12.0