What is this?

Dockerfile for latest gcc (from 'master')

For whom is this usefull?

For people who want to get latest gcc compiler suite (gcc, g++, gfortran, go) without installing them into your system.

Version of the image comes from the following command:

docker run --rm -ti -w /usr/src/gcc gcc-trunk gcc --version | head -n1 | awk '{print $3,$4}' | tr ' ' '-'