Hi, I do diagnostics on Peugeots.
What year is your car and what mileage?
There's a known issue with the fuel pump sticking on certain diesel 306s, which sounds like what's happened to you.
It sounds like there's an airlock in the system, I'd recommend just turning it over until all the air has gone through, unless you have the hand priming bulb - then prime it until its rock hard, but it may take a while and might need a second battery to swap over onto if you flatten yours.
And when you've got it running change the fuel filter.