Make Dockerfile and build instructions for Docker build container

[ErixenCruz]

Requirements so far:

• gdal v3.0.4
• OpenSceneGraph v3.4.0
• libpng
• libjpeg
• zlib

@lilleyse @baothientran If there is anything else let's put it down here

[jtorresfabra]

Sorry to chime in, but is there any reason to not use the last stable release of OSG? which should be OSG-3.6.5

[baothientran]

@jtorresfabra I can try it out with the latest version. Hopefully it should work

[jtorresfabra]

@baothientran thanks for the fast response, I've been tied to OSG development for more than a decade (even I'm its website admin :P), and I know OSG 3.6.x fixed a lot of bugs here and there.

[baothientran]

@jtorresfabra I'm so happy to know you are maintaining the OSG library. Do you know if there are any options in the cmake to let OSG compile only the plugin that we need? We currently use OpenFlight, Zip, Png, and Jpeg ReaderWriter; however, the current build system will build other plugins as well, which can be slow when building the library

Also do you know if it supports static linking? We are currently using dynamic linking for it. And which one do you recommend for the project? Thank you so much for your help

[jtorresfabra]

@baothientran well I'm not maintaining the library, I'm just its website administrator, the leader/maintainer is Robert Osfield. About plugins, as far as I remember it will only compile a plugin if it finds its dependencies. But if you want to explicitely enable/ disable plugins to be compiled you are interested in this line:

https://github.com/openscenegraph/OpenSceneGraph/blob/master/src/osgPlugins/CMakeLists.txt#L35

Finally afaik OSG supports static linking, just a note in case you are not already thinking on it: when static linking libraries the order matters, the library needing symbols should go first (Most dependent libraries goes first in your cmake link command).

[baothientran]

@jtorresfabra Thank you so much for your help. I will give it a try

[ErixenCruz]

@baothientran You ever get errors like this? /var/app/Core/src/BoundingRegion.cpp:6:7: error: extended initializer lists only available with -std=c++11 or -std=gnu++11 [-Werror] : _rectangle{rectangle} It suggests using c++11, but we require c++17 in the root cmakelists

[baothientran]

We discussed offline and it seems to be resolved

[lilleyse]

This issue can be closed since we have a working Dockerfile, but I opened https://github.com/CesiumGS/cdb-to-3dtiles/issues/30 to address some portability issues with the binaries.