docker: use LABEL instead of deprecated MAINTAINER instruction

dlang-tour / core

D Language online tour (https://tour.dlang.org/) and online editor (https://run.dlang.io/)

Boost Software License 1.0

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Closed ljmf00 closed 4 years ago

ljmf00 commented 4 years ago

Signed-off-by: Luís Ferreira contact@lsferreira.net

ljmf00 commented 4 years ago

Depends on #759 , due to invalid cache.

ljmf00 commented 4 years ago

Rebased