Build error -- libtiff

[absudabsu]

ubuntu:latest does not have libtiff4-dev, must update to libtiff5-dev:

Step 8 : RUN apt-get -qq install --yes libicu-dev libtiff4-dev libfreetype6-dev libpng12-dev libxml2-dev libproj-dev libsqlite3-dev libgdal-dev libcairo-dev python-cairo-dev postgresql-contrib libharfbuzz-dev
 ---> Running in e294bf1163f1
E: Package 'libtiff4-dev' has no installation candidate
The command '/bin/sh -c apt-get -qq install --yes libicu-dev libtiff4-dev libfreetype6-dev libpng12-dev libxml2-dev libproj-dev libsqlite3-dev libgdal-dev libcairo-dev python-cairo-dev postgresql-contrib libharfbuzz-dev' returned a non-zero code: 100

I made the change in the dockerfile, and issued a pull request (#2). Seems to build fine for me now.

[srounet]

I try this and let you know, thank you for the PR, and keeping this project up-to-date.

I'll fix the Ubuntu version also in an other commit.

[srounet]

Thank you for the reporting, this is now fixed.
Mapnik is also bumped to 3.0.10 and Ubuntu is fixed to 16.04 to avoid any breaks in the future.

I mark this as resolved.