Dockerfile: Replace deprecated MAINTAINER command (#460)
Dockerfile: Replace deprecated MAINTAINER command (#460)

Signed-off-by: Bob W. Hogg <c772a964fd55352a3510e5d535dd9ccc9ac30168@linux.com>
hanxue/linuxbrew,Linuxbrew/brew,maxim-belkin/brew,hanxue/linuxbrew,maxim-belkin/brew,hanxue/linuxbrew,Linuxbrew/brew,maxim-belkin/brew,Linuxbrew/brew,Linuxbrew/brew