Put the emulator in a container

[csharpfritz]

With the emulator in a container, it would be easy to use for integration testing during CI processes

• @mtheoryx

[derekforeman]

Getting the emulator into a docker container seems to be the easy part. In doing this I see a few potentials with the tight coupling the emulator code has on the manifest.json.

To correct that I see a few options.

1. Copy manifest into app directory / change config to reference local path to /app/manifest.json

2. Mount path to manifest on local file system when running container & change config to reference that mount path in container

3. Abstract emulator code to not be dependent on the manifest and duplicate manifest bits in emulator
   config.

4. Some combination of 3 and 2/1.

If I've missed a potential scenario, please chime in.

I'll create the Dockerfile and update the readme with directions for points 1 and 2 above. If we want to take a different direction in the future, it can be decided then.

[csharpfritz]

Oh yea, @mtheoryx (@roberttables on Twitch / Twitter) is actively working on this and I'll let him comment

[derekforeman]

Ok, I've about got it complete. Since I wasn't watching the stream I'm not sure if it meets the requirements, so I'll hold off on a PR. However, @mtheoryx, if this helps go for it, https://github.com/derekforeman/StreamDeckEmulator/tree/docker

[mtheoryx]

I'm gonna cover what I have so far on stream in a few minutes, then circle back here. I appreciate everyone's help!