pipelineExecutionStartCondition

The start condition configures when the pipeline should trigger a new image build, as follows. If no value is set Image Builder defaults to EXPRESSION_MATCH_AND_DEPENDENCY_UPDATES_AVAILABLE.

• EXPRESSION_MATCH_AND_DEPENDENCY_UPDATES_AVAILABLE (default) – When you use semantic version filters on the base image or components in your image recipe, EC2 Image Builder builds a new image only when there are new versions of the base image or components in your recipe that match the filter.For semantic version syntax, see CreateComponent.

• EXPRESSION_MATCH_ONLY – This condition builds a new image every time the CRON expression matches the current time.