I am looking for ideas for a Play 2.0 continuous integration setup. It would contain typical jobs like build after a git push, nightly builds with deployment to a test Heroku in
Play 2.0's build tool is just a thin wrapper around SBT. You should be able to use Hudson's sbt plugin to execute SBT build commands that are the equivalent of the Play commands you would execute from the console.
We execute the following under Bamboo for our builds:
SBT_OPTS="-Dsbt.log.noformat=true"
sbt clean compile test
(The SBT_OPTS variable turns off the colour formatting, making test output legible in log files.)