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

You may also store encrypted, private variables in the .drone.yml and inject at runtime. Private variables are encrypted using RSA encryption with OAEP (see EncryptOAEP). You can generate encrypted strings from your repository settings screen.

Once you have an ecrypted string, you can add the encrypted variable to the secure section of the .drone.yml. These variables are decrypted and 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

secure:
  HEROKU_TOKEN: <encrypted string>