Install

Tested with Hudson 1.431

Upload target/s3.hpi to your instance of Hudson
Configure S3 profile: Manage Hudson -> Configure System -> Amazon S3 profiles
Project -> Configure -> [x] Publish artifacts to S3 Bucket

Building

You do try either:

Within the Hudson tree

The plugin originally expected to live in the hudson/plugins/s3 directory of a Hudson svn checkout
While in the s3 directory, just run mvn

Standalone tree

While in the hudson-s3 directory, with no parent Hudson source, mvn might work
Note: you may have to move dotm2_settings.xml to ~/.m2/settings.xml

Notes

Only the basename of source files is use as the object key name, an option to include the path name relative to the workspace should probably added.

Acknowledgements

The Hudson scp plugin author for providing a great place to start copy/pasting from
http://github.com/stephenh/hudson-git2 - for this README.markdown template and a great git plugin for hudson
jets3t - http://jets3t.s3.amazonaws.com/index.html