Drone CI - How to set pipeline env var to result of CLI output

Solution 1:

Writing the command output to a script file might be a better way to do what you want, since filesystem changes are persisted between individual steps.

---
kind: pipeline
type: docker

steps:
  - name: generate-script
    image: bash
    commands:
      # - my-command > plugin-script.sh
      - printf "echo Fetching Google;\n\ncurl -I https://google.com/" > plugin-script.sh

  - name: test-script-1
    image: curlimages/curl
    commands:
      - sh plugin-script.sh

  - name: test-script-2
    image: curlimages/curl
    commands:
      - sh plugin-script.sh

From Drone's Docker pipeline documentation:

Workspace

Drone automatically creates a temporary volume, known as your workspace, where it clones your repository. The workspace is the current working directory for each step in your pipeline.

Because the workspace is a volume, filesystem changes are persisted between pipeline steps. In other words, individual steps can communicate and share state using the filesystem.

⚠ Workspace volumes are ephemeral. They are created when the pipeline starts and destroyed after the pipeline completes.