There are differences with the doors. One with the control panel inside and one outside. For the internal control (i.e. the buttons are hidden inside), any 60 x 70 cm front fits the front, provided the dishwasher has standard dimensions. For the external control panel (this is usually at the top in a cover), there are different sizes. Therefore, it may be necessary to tinker.
It is possible. You need a gas bottle, a pressure reducer. That is mandatory. Everything else I would google or ask a gas specialist. Normally it should not be a problem. Only the gas bottle must be "tip-over proof," i.e. secured to the wall with a chain. Also, it must (I think) be secured against unauthorized use, so in the cabinet with a safety lock. Also, in that case, it might be sensible to get a gas detector just to be safe.
All statements are from a layperson, therefore no guarantee of completeness and correctness
So please ensure safety.
I googled once and found this:
It is possible, there are just a few points to consider:
1.) You are only allowed to place one bottle in this room, even if a second bottle is e.g. empty.
2.) You need a gas pressure regulator with pressure display that is approved for use INSIDE! buildings; NO! pressure regulator that is intended for camping/outdoor use!
3.) The gas nozzles must fit and must be checked. There are nozzles for natural gas and for propane gas, so you need gas nozzles for propane gas, meaning nozzles might have to be changed.
4.) The hose line from the gas bottle to the stove must not exceed a certain length (I don’t remember the measurement offhand) otherwise it must be rigid (e.g. copper pipe).
5.) VERY IMPORTANT! Installation may only be carried out by a licensed professional. This serves your safety and that of others living in the building; thus operational safety is guaranteed!
6.) The room must have a window or a door that can be opened and leads to the outside.
7.) The room must have a minimum volume of 30m³.
If you have no idea about gas, keep your hands off. It starts with the nozzles. Different types of gas = different nozzles. Pressure reducer, regulator, etc. This is not for laypeople.
I once saw someone whose bottle exploded. It was oxygen, but that was still not nice... I know about welding bottles, so I know some basics like that.
The oven will probably run on 380 V and be operated separately, as it is an older device. The new devices have only 230 V. Since when, I don’t know, but as far as I know, that was not the case 5 years ago.
Regards
Maverick1854