Add step for publishing to dockerhub

[tsundokul]

🟣 Notes

• it's triggered by commits only on the 'main' branch
• there are two other actions inherited from the original project that should be disabled
  • linters
  • tests

[tsundokul]

🇷🇴 Notes

• added support for RON in the drop list
• adjusted locale to match the Romanian convention for currencies