Docker direct compile and AROS update

Besides the documentation work I also updated the docker container. I created 4 scripts to compile directly from the docker (without using VNC/lazarus) so you can directly compile in your linux installation, that there is a docker container behind it you barely notice. But it only can compile standard Free Pascal things, no LCL applications (missing pathes to the lcl units, also not easy possible, but without Lazarus make not much sense, I think)

The AROS compilation had a big problem, when you compile without -g option it tries to strip but the strip tool was not installed, so I added some more tools to make it possible to compile without -g (makes the executable much smaller)

On this I updated the lazarus version to the latest version 2.0.12 as well.

If you want to use the newest Version of the docker (with the AROS bugfix) start the „CheckForUpdate.sh“ script if you also want to have the direct compile command download the CrossAmigaLazarus Package.