* Update guides for running sytest
Bring the details for running sytest against postgres up to date; prefer docker over manual setup
Signed-off-by: Alex Chen <minecnly@gmail.com>
* Better flags
Signed-off-by: Alex Chen <minecnly@gmail.com>
Add information about how the continuous integration is set up in Dendrite and how to run the tests locally so that people don't need to wait around for things to churn.
