add back proper CJK font support (#1469) (#1470)

docker/Dockerfile

@@ -7,7 +7,20 @@ ARG DEBIAN_FRONTEND=noninteractive
 ENV BACKSTOPJS_VERSION=$BACKSTOPJS_VERSION
 
 # install chromium and its deps
-RUN apt-get -qq update >/dev/null && apt-get install -qq fonts-liberation chromium >/dev/null
+RUN apt-get -qq update >/dev/null && apt-get install -qq \
+fonts-liberation \
+# cyrillic
+xfonts-cyrillic \
+# chinese
+xfonts-wqy fonts-wqy-zenhei fonts-arphic-ukai fonts-arphic-uming \
+# japanese
+fonts-ipafont-mincho fonts-ipafont-gothic fonts-ipafont fonts-vlgothic \
+# korean
+fonts-unfonts-core fonts-unfonts-extra \
+# cjk + emoji font
+fonts-noto-cjk fonts-noto-color-emoji \
+# chromium
+chromium >/dev/null
 
 USER root
 # skip download, we already have it installed