Fix scripts requiring python3

Dockerfile

@@ -2,9 +2,9 @@ FROM ubuntu:bionic
 
 # Style dependencies
 RUN apt-get update && apt-get install --no-install-recommends -y \
-    ca-certificates curl gnupg postgresql-client python fonts-hanazono \
-    fonts-noto-cjk fonts-noto-hinted fonts-noto-unhinted mapnik-utils \
-    nodejs npm ttf-unifont unzip && rm -rf /var/lib/apt/lists/*
+    ca-certificates curl gnupg postgresql-client python3 python3-distutils \
+    fonts-hanazono fonts-noto-cjk fonts-noto-hinted fonts-noto-unhinted \
+    mapnik-utils nodejs npm ttf-unifont unzip && rm -rf /var/lib/apt/lists/*
 
 # Kosmtik with plugins, forcing prefix to /usr because bionic sets
 # npm prefix to /usr/local, which breaks the install

scripts/docker-startup.sh

@@ -54,11 +54,11 @@ EOF
 
 kosmtik)
   # Downloading needed shapefiles
-  python scripts/get-shapefiles.py -n
+  python3 scripts/get-shapefiles.py -n
 
   # Creating default Kosmtik settings file
   if [ ! -e ".kosmtik-config.yml" ]; then
-    cp /tmp/.kosmtik-config.yml .kosmtik-config.yml  
+    cp /tmp/.kosmtik-config.yml .kosmtik-config.yml
   fi
   export KOSMTIK_CONFIGPATH=".kosmtik-config.yml"
 

scripts/generate_road_colours.py

@@ -50,7 +50,7 @@ def generate_colours(settings, section):
     max_h = settings['hue'][1]
 
     delta_h = (max_h - min_h) / colour_divisions
-    
+
     h = min_h
     for name in road_classes:
         hues[name] = h

scripts/generate_shields.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Generate highway shields as SVG files in symbols/shields.