Download sample data when running docker image without config (close #23)

Dockerfile

@@ -4,6 +4,7 @@ MAINTAINER Petr Sloup <petr.sloup@klokantech.com>
 RUN apt-get -qq update \
 && DEBIAN_FRONTEND=noninteractive apt-get -y install \
     curl \
+    unzip \
     build-essential \
     python \
     libcairo2-dev \

run.sh

@@ -1,2 +1,11 @@
 #!/bin/bash
+if [ ! -f /data/config.json ]; then
+  echo "INFO: No config.json found! Downloading sample data..."
+  echo "--------------------------------------------------------------------------------"
+  curl -L -o sample_data.zip https://github.com/klokantech/tileserver-gl-data/archive/v0.8.0.zip
+  unzip -q sample_data.zip -d sample_data
+  mv sample_data/tileserver-gl-data-*/* -t /data
+  rm sample_data.zip
+  rm -r sample_data
+fi
 xvfb-run -a -e /dev/stdout --server-args="-screen 0 1024x768x24" node /usr/src/app/src/main.js -p 80 -c /data/config.json