docker-compose.yaml

version: '3.8'

services:
  
  postgres:
    image: postgres:16.2
    # Mounts the PostgreSQL data directory to persist data
    volumes:
      - postgres_data:/var/lib/postgresql/data
    environment:
      # Environment variables for PostgreSQL configuration
      POSTGRES_DB: ${POSTGRES_DB}
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}

  keycloak:
    image: quay.io/keycloak/keycloak:23.0.6
    # Starts the Keycloak server with a specific command
    command: start
    environment:
      # Environment variables for Keycloak configuration
      KC_HOSTNAME: ${KEYCLOAK_HOSTNAME}
      KC_HOSTNAME_PORT: ${KEYCLOAK_PORT}
      KC_HOSTNAME_STRICT_BACKCHANNEL: 'false'
      KC_HTTP_ENABLED: 'true'
      KC_HOSTNAME_STRICT_HTTPS: 'false'
      KC_HEALTH_ENABLED: 'true'
      KEYCLOAK_ADMIN: ${KEYCLOAK_ADMIN}
      KEYCLOAK_ADMIN_PASSWORD: ${KEYCLOAK_ADMIN_PASSWORD}
      KC_DB: postgres
      KC_DB_URL: jdbc:postgresql://postgres/${POSTGRES_DB}
      KC_DB_USERNAME: ${POSTGRES_USER}
      KC_DB_PASSWORD: ${POSTGRES_PASSWORD}
    ports:
      # Exposes Keycloak on port 8080
      - 8080:8080
    # Restarts the container automatically on failure
    restart: always
    # Ensures Keycloak starts after PostgreSQL
    depends_on:
      - postgres

  redis:
    image: redis:alpine
    # Exposes Redis on port 6379
    ports:
      - "6379:6379"

  api-gateway:
    image: api-gateway:latest
    # Builds the API Gateway from the specified Dockerfile
    build:
      context: ./api-gateway
      dockerfile: Dockerfile
    ports:
      # Exposes the API Gateway on port 8081
      - "8081:8081"
    environment:
      # Environment variables for API Gateway configuration
      - PORT=8081
      - REDIS_HOST=${REDIS_HOST}
      - REDIS_PORT=${REDIS_PORT}
      - AUTH_URL=${AUTH_URL}
      - SERVICE_A_URL=${SERVICE_A_URL}
    depends_on:
      # Ensures API Gateway starts after Redis and Keycloak
      - redis
      - keycloak

  auth-service:
    image: auth-service:latest
    # Builds the Auth Service from the specified Dockerfile
    build:
      context: ./auth-service
      dockerfile: Dockerfile
    ports:
      # Exposes the Auth Service on port 8083
      - "8083:8083"
    environment:
      # Environment variables for Auth Service configuration
      - PORT=8083
      - KEYCLOAK_AUTH_SERVER_URL=${KEYCLOAK_AUTH_SERVER_URL}
      - KEYCLOAK_REALM=${KEYCLOAK_REALM}
      - KEYCLOAK_CLIENT_ID=${KEYCLOAK_CLIENT_ID_APP}
      - KEYCLOAK_CLIENT_SECRET=${KEYCLOAK_CLIENT_SECRET}
    depends_on:
      # Ensures Auth Service starts after Keycloak and API Gateway
      - keycloak
      - api-gateway
  
  crm:
    image: crm:latest
    # Builds the CRM service from the specified Dockerfile
    build:
      context: ./crm
      dockerfile: Dockerfile
    ports:
      # Exposes the CRM service on port 8090
      - "8090:8090"
    environment:
      # Environment variables for CRM configuration
      - PORT=8090
      - REDIS_HOST=${REDIS_HOST}
      - REDIS_PORT=${REDIS_PORT}
    depends_on:
      # Ensures CRM starts after the Auth Service
      - auth-service

  mssql:
    container_name: mssql-db
    hostname: mssql-db
    image: mcr.microsoft.com/mssql/server:2022-latest
    environment:
      # Environment variables for MSSQL configuration
      ACCEPT_EULA: 'Y'
      MSSQL_SA_PASSWORD: ${SQL_SA_PASSWORD}
      MSSQL_DATA_DIR: /var/opt/mssql/data
      MSSQL_PID: 'Developer' 
      MSSQL_TCP_PORT: ${SQL_PORT} 
    ports: 
       # Exposes MSSQL on port 1433
      - "1433:1433"
    # Mounts directories to persist MSSQL data, logs, and secrets
    volumes:
      - ./sql/data:/var/opt/mssql/data
      - ./sql/log:/var/opt/mssql/log
      - ./sql/secrets:/var/opt/mssql/secrets
     
  init-db:
    image: mcr.microsoft.com/mssql-tools
    depends_on:
      # Ensures init-db starts after MSSQL is ready
      - mssql
    environment:
      MSSQL_SA_PASSWORD: ${SQL_SA_PASSWORD}
    volumes:
      # Mounts SQL scripts for database initialization
      - ./sql/gate-master.sql:/var/opt/mssql/scripts/gate-master.sql
      - ./sql/init-data.sql:/var/opt/mssql/scripts/init-data.sql
    # Executes SQL scripts after a delay to ensure MSSQL is ready
    entrypoint: /bin/bash -c "sleep 60s && /opt/mssql-tools/bin/sqlcmd -S mssql-db -U SA -P ${SQL_SA_PASSWORD} -d master -i /var/opt/mssql/scripts/gate-master.sql && /opt/mssql-tools/bin/sqlcmd -S mssql-db -U SA -P ${SQL_SA_PASSWORD} -d master -i /var/opt/mssql/scripts/init-data.sql"

# Defines a named volume to persist PostgreSQL data
volumes:
  postgres_data:
    driver: local