Add Dockerfile and installation instructions

[hiddewie]

Based on https://github.com/jawg/docker-mapnik3 and jawg/docker-mapnik3#8. Usage of Apache licensed software (the image build instructions in this case) should be fine if the Apache License is mentioned explicitly (it is in this PR).

This PR should fix #3704.

Travis integration is still needed: https://docs.travis-ci.com/user/docker/#building-a-docker-image-from-a-dockerfile

The Python and Node bindings could have their own Docker image which also compile those bindings into a derived image.

Each 'main' branch of the project should have it's own image, in particular each release.

[codecov]

Codecov Report

Merging #4153 into v3.0.x will decrease coverage by 1.93%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           v3.0.x    #4153      +/-   ##
==========================================
- Coverage   68.96%   67.02%   -1.94%     
==========================================
  Files         446      446              
  Lines       22984    22324     -660     
==========================================
- Hits        15851    14963     -888     
- Misses       7133     7361     +228     

Impacted Files	Coverage Δ
include/mapnik/image.hpp	0.00% <0.00%> (-100.00%)	⬇️
include/mapnik/value.hpp	0.00% <0.00%> (-100.00%)	⬇️
include/mapnik/params.hpp	0.00% <0.00%> (-100.00%)	⬇️
include/mapnik/boolean.hpp	0.00% <0.00%> (-100.00%)	⬇️
include/mapnik/geometry.hpp	0.00% <0.00%> (-100.00%)	⬇️
include/mapnik/image_any.hpp	0.00% <0.00%> (-100.00%)	⬇️
include/mapnik/text/face.hpp	0.00% <0.00%> (-100.00%)	⬇️
include/mapnik/util/trim.hpp	0.00% <0.00%> (-100.00%)	⬇️
include/mapnik/util/name_to_int.hpp	0.00% <0.00%> (-100.00%)	⬇️
include/mapnik/grid/grid_renderer.hpp	0.00% <0.00%> (-100.00%)	⬇️
... and 70 more

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[hiddewie]

I have no idea why the code coverage would change for this PR. It does not touch the source or tests.

[Sieboldianus]

Based on https://github.com/jawg/docker-mapnik3 and jawg/docker-mapnik3#8. Usage of Apache licensed software (the image build instructions in this case) should be fine if the Apache License is mentioned explicitly (it is in this PR).

This PR should fix #3704.

Travis integration is still needed: https://docs.travis-ci.com/user/docker/#building-a-docker-image-from-a-dockerfile

The Python and Node bindings could have their own Docker image which also compile those bindings into a derived image.

Each 'main' branch of the project should have it's own image, in particular each release.

Many thanks for the Dockerfile. Did you test to include the python-bindings in the Dockerimage? I have tried, but did not suceed so far.

[Sieboldianus]

Here's a (tested) Dockerfile that adds python-bindings to mapnik3 docker from jawg.