Move docker-compose.yml file to lisk repository

[fchavant]

Expected behavior

Once #2234 and LiskArchive/lisk-docker#100 are merged we will have one Dockerfile and one docker-compose.yml as well as the ability to run any network configuration with the -n switch. Under those conditions it makes sense to move the docker-compose.yml file from the LiskHQ/lisk-docker repository to LiskHQ/lisk.

Actual behavior

For historical reasons docker-compose.yml is hosted at LiskHQ/lisk-docker just like the Dockerfile used to be.

Steps to reproduce

Look at both LiskHQ/lisk and LiskHQ/lisk-docker repositories.

Which version(s) does this affect? (Environment, OS, etc...)

Docker using lisk core >= 1.1