version: '3.8'

# Deploy with:
#   docker stack deploy -c ghost.yml ghost
#
# Runs on: adder-ghost
# Three Ghost blog instances, each with its own port and MariaDB database.
# Ghost 1: port 2368, Ghost 2: port 2369, Ghost 3: port 2370

services:
  ghost1:
    image: ghost:5-alpine
    environment:
      database__client: mysql
      database__connection__host: localhost
      database__connection__port: 3306
      database__connection__user: ghost1_user
      database__connection__password: ${GHOST1_DB_PASSWORD}
      database__connection__database: ghost1_db
      url: ${GHOST1_URL:-http://localhost:2368}
    ports:
      - "2368:2368"
    volumes:
      - ghost1_data:/var/lib/ghost/content

  ghost2:
    image: ghost:5-alpine
    environment:
      database__client: mysql
      database__connection__host: localhost
      database__connection__port: 3306
      database__connection__user: ghost2_user
      database__connection__password: ${GHOST2_DB_PASSWORD}
      database__connection__database: ghost2_db
      url: ${GHOST2_URL:-http://localhost:2369}
      server__port: 2369
    ports:
      - "2368:2369"
    volumes:
      - ghost2_data:/var/lib/ghost/content

  ghost3:
    image: ghost:5-alpine
    environment:
      database__client: mysql
      database__connection__host: localhost
      database__connection__port: 3306
      database__connection__user: ghost3_user
      database__connection__password: ${GHOST3_DB_PASSWORD}
      database__connection__database: ghost3_db
      url: ${GHOST3_URL:-http://localhost:2370}
      server__port: 2370
    ports:
      - "2370:2370"
    volumes:
      - ghost3_data:/var/lib/ghost/content


volumes:
  ghost1_data:
  ghost2_data:
  ghost3_data: