Build a fire in your pizza oven or if its gas driven then turn it on and place your dutch oven or cast iron pot in the oven for 1 hour and ensure the temperature gets up to 550°
Maintain your fire to ensure its pushed to the back corner of the oven or if its gas then place the pot away from the heat source. Ensure you maintain your temperature. When your ready to bake the bread, allow the temperature to drop down to 500°
Pull your proofed sourdough bread from fridge and make your cuts or designed and that final cut so the dough and let off steam and cook properly.
Place dough in dutch oven or cast iron skillate then cover it with foil because most likely the lid won't fit because of height unless yours is taller.
Place in Oven at 500° for 26 minutes and then remove. The last 5 minutes of the cook allow the oven temperature to drop down to 450 - 475°. Once you pull out of the oven after the 26 minutes remove the foil and cut off a piece thats circular just big enough to cover the top part of the bread to ensure that very top part doesn't get burned.
Remove after a total cook time of 42 minutes and let it rest for exactly one hour and then cut into it. If you want the full sourdough bread recipe - then stay tuned. That recipe will be coming soon.
Notes
Opening of Pizza Oven Needs to be tall enough to fit your cast iron or dutch oven in.