Add Docker and DockerCompose

[silvermind]

Having a simple Dockerfile to build an image and a docker-compose with sample .env File could help for new developer to get started easily. Similar to the recent changes in the WhiteWhale Bot Repo: https://github.com/White-Whale-Defi-Platform/white-whale-bots

I've adapted these scripts below, Do you think it would help? If so, I will craft a MR for this.

Note: Atm the app is started just using "yarn start", the WhiteWhale Docker also added a "build" `script to packsage.json using "tsc" and then precompiling the app during docker build. No familiar with tsc, so I went the easy way. but using tsc might be the better way...

Dockerfile

FROM node:19

ENV TERM=xterm
RUN mkdir /usr/src/app
WORKDIR /usr/src/app

COPY package*.json ./
RUN yarn install

#COPY .eslintrc ./
COPY tsconfig.json ./
COPY src ./src

#RUN yarn build (TBD)

CMD ["yarn", "start"]

docker-compose.yml

version: '3.9'

services:
  crank:
    build: .
    image: kujira-crank
    container_name: kujira-crank
    env_file:
      - .env
    restart: always
    stdin_open: true
    tty: true

.env.kujira-mainnet.example

MNEMONIC="" ##change this

NETWORK=mainnet

# RPC Endpoint (default unless defined)
# https://docs.kujira.app/validators/community-tooling
# https://docs.mintthemoon.xyz/kujira/resources/
#
# RPC_ENDPOINT=https://kujira.rpc.ghostinnet.com
# RPC_ENDPOINT=https://kujira-rpc.ibs.team