When using 0.7.3 of the upload pipe you can shoot yourself in the foot if you have navigated away from the clone dir with your script entries in the step.
The pipe will not find any globbed file patterns.
You need to navigate to `$BITBUCKET_CLONE_DIR` before inintializing the pipe.
When the pipe starts the nested container it uses `--workdir=${pwd}`. So if your main container is on a different working directory, the glob pattern will be wrong since it's only correct when relative to the clone dir.
Please adjust the documentation to mention that your working directory needs to be the clone dir before invoking the upload pipe.