Summary:
Provide a configuration option in bitbucket-pipelines.yml to allow artifacts to be stored and downloaded in their original format (e.g., .zip, .jar, or raw files) without being automatically wrapped in a .tar.gz archive.

Problem Statement:
Currently, Bitbucket Pipelines automatically packages all defined artifacts into a .tar.gz file for transfer between steps and for manual downloads from the UI. When a pipeline produces an artifact that is already compressed (such as a .zip file), the resulting download is a "zip-within-a-tarball."

Suggested Solution:
Introduce a compression: false (or similar) flag within the artifact definition in the bitbucket-pipelines.yml file.