Dockerise dsh lmc - SAR-88
This MR adds a Dockerfile that builds the dsh-lmc-prototype software.
There is also CI stage added that will build and publish the docker image to Nexus. This is a manual step as it should only publish upon releases.
The initial version we set it to is 0.1.0
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The image is available at: https://nexus.engageska-portugal.pt/#browse/search/docker=attributes.docker.imageName%3Dlmc:21031dfaf45e5b582dd26974d8de6f4e
Closes SAR-88