add tabulate

Change-Id: Id233c5e36c30799e10dcb7a8d104a087be8e0c67

ai-box/Dockerfile

@@ -31,7 +31,7 @@ RUN apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 40976EAF437D05B5 \
     && apt-get install -y --allow-unauthenticated \
          bzip2 gcc libmysqlclient-dev libzbar-dev \
          littler r-cran-littler r-cran-stringr \
-         r-base=3.5.1-* r-base-dev=3.5.1-* r-recommended=3.5.1-* \
+         r-base r-base-dev r-recommended \
     && pip install --no-cache-dir --trusted-host mirrors.aliyun.com \
          -i http://mirrors.aliyun.com/pypi/simple -r requirements.txt \
     && echo 'options(repos = c(CRAN = "https://cloud.r-project.org/"))' >> /etc/R/Rprofile.site \

ai-box/requirements.txt

@@ -42,3 +42,4 @@ imutils==0.5.1
 seaborn==0.8.1
 tensorflow==1.12.0
 keras==2.2.4
+tabulate==0.8.2