postgres 18 does not work on ubuntu 22

app/Dockerfile

@@ -10,9 +10,9 @@ RUN pip install --no-cache-dir -r requirements.txt
 COPY . ./app/
 
 # Expose Gunicorn port
-EXPOSE 8000
+EXPOSE 4444
 
 # Gunicorn command for a package structure
 # "app:create_app()" assumes you have a factory function in __init__.py
 # If your Flask instance is just named 'app' inside __init__.py, use "app:app"
-CMD ["gunicorn", "--preload", "-w", "4", "-b", "0.0.0.0:8000", "app:create_app()"]
+CMD ["gunicorn", "--preload", "-w", "4", "-b", "0.0.0.0:4444", "app:create_app()"]