Doable docking?

Hi,
Case,
Tractor with a 40 foot dry cargo semitrailer.
Internal road has an uphill slope of 8 degrees.
Tractor and trailer would have to pass the docking site to then backup and turn into the docking place. Turn required 100 degrees as to get inn. Entry backing uphill which would make the maneuver easier is not possible, no place to reverse direction.
Only 65 feet in front of the docking entrance to maneuver for the turn. (Distant edge of road to docking entrance.
Is a downhill backing turn to align the semitrailer and enter the docking site possible in such a limited space?
Are 8 degrees side slope still safe as to not roll over?

Case not in the USA, I am not a driver.

Brgds.

 

Panoramic view, distorted a bit, but so you all get an idea.

 

Which is?

 

Appreciate your help Blarian.
This is a warehouse complex that is just in its initial operation. One trailer has come in but said that was too tight to go in backwards and went in straight.
I am attaching a picture when he was getting out to get a general idea. 40 ' container. You can see on the far right that they cut the walkway to give more space, maybe 4 feet but the road continues as it comes and starts then making a right turn upwards on the hill and to the third level.
Unloading was a mess. We have requested the developers to show us it can be done and give us exact measurements but are still waiting for that or the next trailer to arrive in one week.
Google earth only shows the project under construction and what you will see is the third floor of warehouses project level. Search Pilatesproworks Guatemala, its right next to it. Docking site is on second level under the fourth warehouse from left to right.
Angle is more than the 100 degrees I said, sorry.

 

Is there any ballpark reference in minimum lateral distance to backup and be able to put the trailer 90 deg from were it was eith a 40 feet container?
I.e. xx feet more tan the total lenght of the tractor and trailer.