chore(pipeline): specify Docker image version and update README

- Update Dockerfile to use a specific version of the image instead of the latest
- Add a new status field description to the README for the triggered pipeline

Signed-off-by: appleboy <[email protected]>

feat(readme): clarify pipeline configuration parameters and defaults

- Add default values for wait, timeout, and interval parameters in the pipeline configuration
- Update documentation to clarify the purpose of each parameter
- Remove outdated descriptions for wait, timeout, and interval options

Signed-off-by: appleboy <[email protected]>

chore: update base image to version 1.2.0

- Update the base image version from 1.1.0 to 1.2.0

Signed-off-by: appleboy <[email protected]>

docs: update README to include API pipeline triggers

- Add a reference to triggering pipelines using the API in the README.

Signed-off-by: appleboy <[email protected]>

upgrade to drone-gitlab-ci 1.0.2

Signed-off-by: Bo-Yi Wu <[email protected]>

chore: specific the drone-gitlab-ci version