I made these pull requests to drone-runtime and drone-yaml adding support for ipc. We are having to build our own drone images right now in order to use this option and I have seen one or two other support requests in here regarding ipc mode.
One important reason people are wanting this feature is because Cypress, a popular integration test system recommends this option to solve an out-of-memory issue which causes instability when running tests (see https://github.com/cypress-io/cypress/issues/350).
Is there anything I can do to help push this along?