Add Docker to Containerize RPC Services

[evanugarte]

Waiting on #44

Resolves#32

How to Test this PR

1. Install docker using this guide
2. Install docker-compose like this
3. In SCE-RPC directory, type sudo docker-compose up. This will create 3 containers for each RPC service.
4. Run sudo docker ps to get the container id of a running service
5. With a chosen id, do sudo docker inspect <id> to find the ip addres
6. Test that the client can talk to the container by adding a snippet of code to invoke the RPC.

For example in client/ledsign/led_sign_client.js

asyncfunctionmain(){awaithealthCheck('doodie','172.18.0.4').then(res=>console.log('we got',res)).catch(err=>console.log('nO!',err))}main()

[evanugarte]

Closing this due to this article