You can pretty easily set up your build to package up your app and all it's dependencies as a tar.gz/zip/whatever during the package phase. This is what you can

You can pretty easily set up your build to package up your app and all it's dependencies as a tar.gz/zip/whatever during the package phase. This is what you can export to your sandbox environment. Or does what you would want to test in the sandbox include the building and dependency resolution phases?