add simsun.ttc to ai-box

Change-Id: I1e4ef4f499e80f84413a3ff890f175dd489fa735

ai-box/Dockerfile

@@ -24,10 +24,11 @@ ENV LIBRARY_PATH /usr/lib/gcc/x86_64-linux-gnu/8
 
 COPY sources.list /etc/apt/sources.list
 COPY requirements.txt ./
+COPY simsun.ttc /usr/local/fonts/
 RUN apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 40976EAF437D05B5 \
     && apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 3B4FE6ACC0B21F32 \
     && apt-get update \
-    && apt-get install -y --no-install-recommends --allow-unauthenticated \
+    && 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-* \