docker-compose.yml

version: "3.3"

services:


  ####################################
  # Service #1: Auto-Restarter based on Docker Health Checks
  ####################################
  autoheal:
    container_name: autoheal
    image: willfarrell/autoheal
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    <<: &autoRestartOnFailure
      deploy:
        restart_policy:
          condition: on-failure
          max_attempts: 10


  ####################################
  # Service #2: S3 Server (if needed)
  ####################################
  # s3:
  #   <<: *autoRestartOnFailure
  #   container_name: s3
  #   image: "scireum/s3-ninja"
  #   platform: linux/x86_64 # Helps ensure consistency even when used on an M1 Mac
  #   ports:
  #     - 4566:4566
  #   volumes:
  #     - ./.s3/data:/home/sirius/data
  #     - ./.s3.conf:/home/sirius/app/application.conf


  ####################################
  # Service #3: SMTP Mail server (if needed)
  ####################################
  smtp:
    <<: *autoRestartOnFailure
    container_name: smtp
    image: mailhog/mailhog
    expose:
      - 1025
      - 8025
    ports:
      - '1025:1025'
      - '8025:8025'
    healthcheck:
      # This tests the HTTP endpoint, NOT the SMTP endpoint, but is "good enough" for now
      test: wget http://127.0.0.1:8025/ --spider
      interval: 6s
      timeout: 6s
      retries: 10


  ####################################
  # Service #4: DynamoDB Database
  ####################################
  dynamodb:
    <<: *autoRestartOnFailure
    container_name: dynamodb
    image: amazon/dynamodb-local:latest
    # To force-persist the data which is disabled by default
    # Uncomment if needed both command: and volumes:
    # https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DynamoDBLocal.DownloadingAndRunning.html#docker
    command: -jar DynamoDBLocal.jar -sharedDb -dbPath /home/dynamodblocal/data/
    volumes:
      - /tmp/dynamodb_data:/home/dynamodblocal/data
    ports:
      - "8000:8000"
    healthcheck:
      # Note: This doesn't check really that DynamoDB is working, but it's good enough
      test: curl http://localhost:8000
      interval: 6s
      timeout: 6s
      retries: 10


  ####################################
  # Service #5: DynamoDB Database Web Admin / GUI (if desired)
  ####################################
  dynamodb-admin:
    <<: *autoRestartOnFailure
    container_name: dynamodb-admin
    image: aaronshaf/dynamodb-admin
    ports:
      - "8001:8001"
    depends_on:
      dynamodb:
        condition: service_healthy
    healthcheck:
      test: wget http://127.0.0.1:8001/ --spider
      interval: 6s
      timeout: 6s
      retries: 10
    environment:
      DYNAMO_ENDPOINT: "http://dynamodb:8000"


  ####################################
  # Init-Container #1: Run Migrations
  ####################################
  # Runs migrations after our database is up...
  migrate:
    <<: *autoRestartOnFailure
    container_name: migrate
    depends_on:
      dynamodb:
        condition: service_healthy
      smtp:
        condition: service_healthy
      # s3:
      #   condition: service_healthy
    entrypoint:
      - /bin/sh
    command:
      - "-c"
      - "python3 migrate.py -s local -r us-east-1 && touch /tmp/finished-migrations && sleep 100000000000"
    healthcheck:
      test: ls /tmp/finished-migrations
      interval: 5s
      timeout: 4s
      retries: 10
    <<: &globalAppSettings
      image: our-app
      platform: linux/x86_64 # Helps ensure consistency even when used on an M1 Mac
      working_dir: "/app"
      build:
        context: .
        dockerfile: Dockerfile
      environment:
        # This is our deploy environment name, could also be "dev" for local development, arguably, but we'll keep "dev" for hosted on AWS
        STAGE: "local"
        # This is to cause python to instantly echo/print stuff out to stdout, not buffer
        PYTHONDONTWRITEBYTECODE: "1"
        PYTHONUNBUFFERED: "1"
        # This is to send to our local SMTP "server" and gui for dev envs
        SERVER_EMAIL: "local@mywebsite.dev"
        SMTP_HOST: "smtp"
        SMTP_PORT: "1025"
        # This is to use our local dynamodb
        DYNAMO_ENDPOINT: "http://dynamodb:8000"
        AWS_REGION: "us-east-1"
        AWS_ACCESS_KEY_ID: local
        AWS_SECRET_ACCESS_KEY: local
      volumes:
        - type: bind
          source: ./
          target: /app


  ####################################
  # App-Container #1: API
  ####################################
  # NOTE: Auto-reload happens automatically as a part of the Dockerfile Chalice initialization command
  app:
    <<: *autoRestartOnFailure
    <<: *globalAppSettings
    container_name: app
    entrypoint:
      - chalice
    command: ["local", "--host", "0.0.0.0", "--port", "8002", "--stage", "local", "--autoreload"]
    ports:
      - "8002:8002"
    depends_on:
      # Ensure our necessary services are up
      dynamodb:
        condition: service_healthy
      smtp:
        condition: service_healthy
      # s3:
      #   condition: service_healthy
      # Ensure we've ran migrations
      migrate:
        condition: service_healthy
    # Ensure we autoheal incase we crash hard (eg: syntax error)
    labels:
      autoheal: "true"
    # Ensure our service is up and running and healthy (needed for autoheal)
    healthcheck:
      test: curl --fail -s http://localhost:8002/healthy || exit 1
      start_period: 10s  # Wait 10 seconds for our app to startup before throwing health probes at it
      interval: 5s
      timeout: 4s
      retries: 4


# Save/persist our DynamoDB Data
volumes:
  dynamodb_data: