Antora

Setup

My current Antora setup runs these services:

kroki: A Kroki main server to generate images from PlantUML sources.
mermaid: A Mermaid server in support of Kroki.

Configuration remarks:

The Kroki servers also run in a GitHub action. There, they can be reached using the domain name kroki. To make the same playbook work locally, I added this name to my /etc/hosts file too:
```
127.0.0.1	kroki
```

In an Antora playbook, I add the following lines to use Kroki:

asciidoc:
  extensions:
  - asciidoctor-kroki (1)
  attributes:
    kroki-fetch-diagram: true (2)
    allow-uri-read: true
    experimental: true
    kroki-default-format@: svg
    kroki-server-url: http://kroki:8000 (3)

1	Use kroki to generate diagram images
2	For kroki: store the image. This requires `allow-uri-read`, as well as `experimental` (to override kroki security)
3	Uses a local kroki server via docker compose

Example files

docker-compose.yml

version: "3"
services:
  kroki:
    image: yuzutech/kroki
    depends_on:
      - mermaid
    environment:
      - KROKI_MERMAID_HOST=mermaid
    ports:
      - "8000:8000"
  mermaid:
    image: yuzutech/kroki-mermaid
    expose:
      - "8002"