New green card holder - filing status and foreign income

Could I please get some advice on how to file taxes for my situation?

  • I immigrated to the US in August 2020 on a Green Card
  • I have an American wife who has been living and working in the US for all of 2020
  • I earned foreign income up until August 2020 and did not have any foreign or US income for the rest of 2020

Am I supposed to file jointly? If so, do I need to report my foreign income earned before immigrating in August? Even though I paid taxes for it in the foreign country?