Example: Mailman

Table of contents

1. docker-compose
2. Output (markdown)
3. Images (svg)

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docker-compose

Given the following docker-compose:

# from https://github.com/maxking/docker-mailman/blob/9d9a627f72f3fcaa29f15f0ddfe0f77c686189ca/docker-compose-postorius.yaml
services:
  mailman-core:
    image: maxking/mailman-core:0.4
    container_name: mailman-core
    hostname: mailman-core
    volumes:
      - /opt/mailman/core:/opt/mailman/
    stop_grace_period: 30s
    links:
      - database:database
    depends_on:
      - database
    environment:
      - DATABASE_URL=postgres://mailman:mailmanpass@database/mailmandb
      - DATABASE_TYPE=postgres
      - DATABASE_CLASS=mailman.database.postgresql.PostgreSQLDatabase
    ports:
      - "127.0.0.1:8001:8001" # API
      - "127.0.0.1:8024:8024" # LMTP - incoming emails
    networks:
      mailman:

  mailman-web:
    image: maxking/postorius:0.4
    container_name: mailman-web
    hostname: mailman-web
    depends_on:
      - database
    links:
      - mailman-core:mailman-core
      - database:database
    volumes:
      - /opt/mailman/web:/opt/mailman-web-data
    environment:
      - DATABASE_TYPE=postgres
      - DATABASE_URL=postgres://mailman:mailmanpass@database/mailmandb
      - SECRET_KEY=ksjdbaksdba
      - UWSGI_STATIC_MAP=/static=/opt/mailman-web-data/static
    ports:
      - "127.0.0.1:8000:8000" # HTTP
      - "127.0.0.1:8080:8080" # uwsgi
    networks:
      mailman:

  database:
    environment:
      POSTGRES_DB: mailmandb
      POSTGRES_USER: mailman
      POSTGRES_PASSWORD: mailmanpass
    restart: always
    image: postgres:9.6-alpine
    volumes:
      - /opt/mailman/database:/var/lib/postgresql/data
    networks:
      mailman:

networks:
  mailman:
    driver: bridge
    ipam:
      driver: default
      config:
        -
          subnet: 172.19.199.0/24

Output (markdown)

Using the default output, the following mermaid diagram is generated:

%%{init: {'theme': 'default'}}%%
flowchart TB
  Voptmailmancore{{/opt/mailman/core}} x-. /opt/mailman/ .-x mailmancore[mailman-core]
  Voptmailmanweb{{/opt/mailman/web}} x-. /opt/mailman-web-data .-x mailmanweb[mailman-web]
  Voptmailmandatabase{{/opt/mailman/database}} x-. /var/lib/postgresql/data .-x database[(database)]
  mailmancore -- database --> database
  mailmancore --> database
  mailmanweb -- mailman-core --> mailmancore
  mailmanweb -- database --> database
  mailmanweb --> database
  P0((8001)) -.-> mailmancore
  P1((8024)) -.-> mailmancore
  P2((8000)) -.-> mailmanweb
  P3((8080)) -.-> mailmanweb
  mailmancore -.- mailman[/mailman/]
  mailmanweb -.- mailman
  database -.- mailman

  classDef volumes fill:#fdfae4,stroke:#867a22
  class Voptmailmancore,Voptmailmanweb,Voptmailmandatabase volumes
  classDef ports fill:#f8f8f8,stroke:#ccc
  class P0,P1,P2,P3 ports
  classDef nets fill:#fbfff7,stroke:#8bc34a
  class mailman nets

Images (svg)

Using default theme (--with-bg option):

Or dark theme (--with-bg option):