harness-drone/doc/build/env.md

Variables

The build environment has access to the following environment variables:

• CI=true
• DRONE=true
• DRONE_REPO - repository name for the current build
• DRONE_BUILD - build number for the current build
• DRONE_BRANCH - branch name for the current build
• DRONE_COMMIT - git sha for the current build
• DRONE_DIR - working directory for the current build

Private Variables

Drone also lets you to store sensitive data external to the .drone.yml and inject at runtime. You can declare private variables in the repository settings screen. These variables are injected into the .drone.yml at runtime using the $$ notation.

An example .drone.yml expecting the HEROKU_TOKEN private variable:

build:
  image: golang
  commands:
    - go get
    - go build
    - go test

deploy:
  heroku:
    app: pied_piper
    token: $$HEROKU_TOKEN