Simple example of an MSSQL image, with multiple executions of the mssql-init to initialize and add modules to sql.

docker-compose.yml

version: "2.4"
services:
  mssql:
    isolation: ${ISOLATION}
    image: ${SITECORE_DOCKER_REGISTRY}nonproduction/mssql-developer:2017-${SITECORE_VERSION}
    environment:
      SA_PASSWORD: ${SQL_SA_PASSWORD}
      ACCEPT_EULA: "Y"
    ports:
      - "14330:1433"
    volumes:
      - type: bind
        source: .\mssql-data
        target: c:\data

  mssql-init:
    isolation: ${ISOLATION}
    image: ${SITECORE_DOCKER_REGISTRY}sitecore-xm1-mssql-init:${SITECORE_VERSION}
    environment:
      SQL_SERVER: ${SQL_SERVER}
      SQL_ADMIN_LOGIN: ${SQL_SA_LOGIN}
      SQL_ADMIN_PASSWORD: ${SQL_SA_PASSWORD}
      SITECORE_ADMIN_PASSWORD: ${SITECORE_ADMIN_PASSWORD}
      POST_DEPLOYMENT_WAIT_PERIOD: 300
    healthcheck:
      test: ["CMD", "powershell", "-command", "if ([System.Environment]::GetEnvironmentVariable('DatabasesDeploymentStatus', 'Machine') -eq 'Complete') { exit 0 } else { exit 1}"]
      start_period: 300s
      interval: 5s
    depends_on:
      mssql:
        condition: service_healthy

  mssql-init-spe:
    isolation: ${ISOLATION}
    image: ${REGISTRY}${COMPOSE_PROJECT_NAME}-xm1-mssql-init:${VERSION:-latest}
    build:
      context: ./build/mssql-init
      args:
        BASE_IMAGE: ${SITECORE_DOCKER_REGISTRY}sitecore-xm1-mssql-init:${SITECORE_VERSION}
        SPE_IMAGE: ${SITECORE_MODULE_REGISTRY}sitecore-spe-assets:${SPE_VERSION}
        HEADLESS_IMAGE: ${SITECORE_MODULE_REGISTRY}sitecore-headless-services-xm1-assets:${HEADLESS_VERSION}
    environment:
      SQL_SERVER: ${SQL_SERVER}
      SQL_ADMIN_LOGIN: ${SQL_SA_LOGIN}
      SQL_ADMIN_PASSWORD: ${SQL_SA_PASSWORD}
      SITECORE_ADMIN_PASSWORD: ${SITECORE_ADMIN_PASSWORD}
      POST_DEPLOYMENT_WAIT_PERIOD: 300
      DATABASES_TO_DEPLOY: spe_data,headless_data
    healthcheck:
      test: ["CMD", "powershell", "-command", "if ([System.Environment]::GetEnvironmentVariable('DatabasesDeploymentStatus', 'Machine') -eq 'Complete') { exit 0 } else { exit 1}"]
      start_period: 300s
      interval: 5s
    depends_on:
      mssql:
        condition: service_healthy
      mssql-init:
        condition: service_stopped

 

Thanks for the note, Rafael. I have updated the gist :)