This is a Drone extension to support mono repositories with multiple .drone.yml.

The extension checks each changed file and looks for a .drone.yml in the directory of the file or any parent directory. Drone will either use the first .drone.yml that matches or optionally run all of them in a multi-machine build.

There is an official Docker image: https://hub.docker.com/r/bitsbeats/drone-tree-config

Currently supports only Github.

Environment variables:

• PLUGIN_CONCAT: Concats all found configs to a multi-machine build. Defaults to false.
• PLUGIN_FALLBACK: Rebuild all .drone.yml if no changes where made. Defaults to false.
• PLUGIN_MAXDEPTH: Max depth to search for drone.yml, only active in fallback mode. Defaults to 2 (would still find /a/b/.drone.yml).
• PLUGIN_DEBUG: Set this to true to enable debug messages.
• PLUGIN_ADDRESS: Listen address for the plugins webserver. Defaults to :3000.
• PLUGIN_SECRET: Shared secret with drone. You can generate the token using openssl rand -hex 16.
• GITHUB_TOKEN: Github personal access token. Only needs repo rights. See here.
• GITHUB_SERVER: Custom Github server for Github Enterprise

If PLUGIN_CONCAT is not set, the first .drone.yml will be used.

Example docker-compose:

version: '2'
services:
  drone-server:
    image: drone/drone
    ports:
      - 8000:80
    volumes:
      - /var/lib/drone:/data
      - /var/run/docker.sock:/var/run/docker.sock
    links:
      - drone-tree-config
    restart: always
    environment:
      - DRONE_OPEN=true
      - DRONE_SERVER_PROTO=https
      - DRONE_SERVER_HOST=***
      - DRONE_GITHUB=true
      - DRONE_GITHUB_SERVER=https://github.com
      - DRONE_GITHUB_CLIENT_ID=***
      - DRONE_GITHUB_CLIENT_SECRET=***
      - DRONE_GIT_ALWAYS_AUTH=true
      - DRONE_SECRET=***
      - DRONE_RUNNER_CAPACITY=2

      - DRONE_YAML_ENDPOINT=http://drone-tree-config:3000
      - DRONE_YAML_SECRET=<SECRET>

  drone-tree-config:
    image: bitsbeats/drone-tree-config
    environment:
      - PLUGIN_DEBUG=true
      - PLUGIN_CONCAT=true
      - PLUGIN_FALLBACK=true
      - PLUGIN_SECRET=<SECRET>
      - GITHUB_TOKEN=<GITHUB_TOKEN>

Edit the Secrets (***), <SECRET> and <GITHUB_TOKEN> to your needs. <SECRET> is used between Drone and drone-tree-config.