chore(docker): add docker build

[mastilver]

After merging, steps to add kupo to the docker registry:

• go to https://hub.docker.com and log-in
• click on Create dropdown
• select Create Automated Build
• select Github then phanan/kupo
• Add a description and Create
• On the repository go to Build Settings and trigger a build

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This is using an API which was introduce on [email protected]

Unfortunately at the moment, it's not available as:

• stable: 17.3.1
• rc: 17.5.0

[m1guelpf]

@mastilver Would this work with any other Laravel application? I'm trying to add Docker support for OrgManager, and maybe this would work...

[mastilver]

@m1guelpf I would think so, of course there would be differences, but it should follow the same idea

ping me if you need guidance