Dockerize Golang backend

docker-compose.yml

version: '3'

services:
  app: &app
    image: ampgs:0.3.1-development
    build:
      context: .
      dockerfile: docker/development/Dockerfile
    env_file:
     - .env
    environment:
      PORT: 8000
      PROMETHEUS_PORT: 2121
      REDIS_URL: redis://redis:6379/6
      DATABASE_URL: postgres://postgres:postgres@postgres:5432/ampgs?sslmode=disable
    volumes:
      - .:/go/src/github.com/evilmartians/ampgs
    depends_on:
      - redis
      - postgres

  runner:
    <<: *app

  test:
    <<: *app
    command: "go test -v ./..."

  web:
    <<: *app
    command: make web
    ports:
      - '8000:8000'
      - '2121:2121'
    networks:
      default:
      amplifr_internal:
        aliases:
          - ampgs-server

  redis:
    image: redis:4-alpine
    volumes:
      - redis:/data
    ports:
      - 6379

  postgres:
    image: postgres:9.6-alpine
    environment:
      POSTGRES_DB: ampgs
    volumes:
      - postgres:/var/lib/postgresql/data
    ports:
      - 5432

volumes:
  redis:
  postgres:

networks:
  amplifr_internal:
    external: true

Dockerfile

FROM golang:1.11

ARG MIGRATE_VERSION=4.0.2

# install postgres client for local development
RUN apt-get update && apt-get install -y postgresql-client

# install dep tool to ensuring dependencies
RUN go get -u github.com/golang/dep/cmd/dep

# install migrate cli for running database migrations
ADD https://github.com/golang-migrate/migrate/releases/download/v${MIGRATE_VERSION}/migrate.linux-amd64.tar.gz /tmp
RUN tar -xzf /tmp/migrate.linux-amd64.tar.gz -C /usr/local/bin && mv /usr/local/bin/migrate.linux-amd64 /usr/local/bin/migrate

ENV APP ${GOPATH}/src/github.com/evilmartians/ampgs
WORKDIR ${APP}