* docs: info for osx docker oom
By default Docker for OSX only gives docker 2 Gb of memory. This may be
an issue when build the binary via docker seeing as the aeson library
requires a hefty amount of memory, eg:
https://github.com/haskell/aeson/issues/738
So this adds some info to the docs in order to help guide users on how
to give docker more memory to build erd via docker
* docs: mv osx specific docker issues to dockerfile
* chore: fix typo