Hi

The thing at your placemark is not a container, its just a cargo railroad car. If you scroll down a little, you can find a whole train of that cars, hidden under the trees. Of course a container can be inside that car.

As for Gorognya site at 55 9'11.66"N 3823'4.32"E, its obviously that at present time there is some sort of a satellite communication or control center here. But its possible, that in the past, there was an ABM launch complex. Also, there are some little similarities between old buildings of this site and a rest of ABM test site at Sary-Shagan poligon ( 4548'34.79"N 7334'19.89"E ).
Of course, it is only a guess, not an exact information.

A strange position of that site in SE can be possible. N. Drozdov, who took part in the development of the Moscow ABM system, wrote in his book "Tne history of the Moscow ABM system" that initially the first A-35 system had a different structure. Each Launch Complex of that system consisted of 4 Launch Nodes. Launch Node had a target channel radar, 2 missile channel radars and 8 launch positions (4 by each missile radar). The system used a "triangulation" guidance method, and thus, each LC could guide 2 missiles to one target at the same time. To achieve a best accuracy, LNs of the same LC was placed at the opposite sides of Moscow as far as possible from each other. Then a triangulation method was rejected and modernized A-35M system got another "one-node" structure. In which, each LC has only one LN. Thus the number of LCs was increased but their positions remained the same. (Drozdov doesn't write anything about a number of missiles on each new LC in his book) That can be a reason for the symmetrical positions of the LCs.