Expose Pipeline Environment Variables to Each Build Step

Drone Support
1

Hi there, is it possible to expose all (or a subset) of the pipeline environment variables to all steps in a docker pipeline?

These are the environment variables that I would like my steps to have access to: https://docs.drone.io/pipeline/environment/reference/

Now, thus far, I have been defining the “environment” section of the .drone.yml file like this:

---
kind: pipeline
type: docker
name: Epic pipeline

clone:
  depth: 1

steps:
- name: Build
  image: some/image
  environment:
    DRONE_BRANCH: $DRONE_BRANCH
    DRONE_BUILD_CREATED: $DRONE_BUILD_CREATED
    DRONE_BUILD_STARTED: $DRONE_BUILD_STARTED
    DRONE_BUILD_NUMBER: $DRONE_BUILD_NUMBER
    ...

- name: Build
  image: some/image
  environment:
    DRONE_BRANCH: $DRONE_BRANCH
    DRONE_BUILD_CREATED: $DRONE_BUILD_CREATED
    DRONE_BUILD_STARTED: $DRONE_BUILD_STARTED
    DRONE_BUILD_NUMBER: $DRONE_BUILD_NUMBER
    ...

- name: Notify
  image: some/image
  environment:
    DRONE_BRANCH: $DRONE_BRANCH
    DRONE_BUILD_CREATED: $DRONE_BUILD_CREATED
    DRONE_BUILD_STARTED: $DRONE_BUILD_STARTED
    DRONE_BUILD_NUMBER: $DRONE_BUILD_NUMBER
    ...

trigger:
  event:
  - tag
...

I have .drone.yml files that are similar to this in multiple different projects where most of the steps have need of similar pipeline environment variables.

It would be really nice if I could just tell my Drone runners to expose all of these variables to all of the steps… that way I can clean up my .drone.yml files.

Now, the closest thing that I have found is the DRONE_RUNNER_ENV_FILE where I can set static environment variables… But pipeline variables are clearly dynamically generated with commit details and current build details.

Can you point me in the right direction?

2

The environment variables at the referenced link are automatically injected into every pipeline step. See the following yaml and build for reference:

3

Haha, wow… That was an easy fix. Thanks a lot!