Add proxy build argument to dockerfiles #177

Job	Run time
AAS Environment - Build and Start Docker Image	3m 20s
AAS Discovery - Build and Start Docker Image	2m 43s
AAS Registry Kafka MongoDB - Build and Start Docker Image	2m 49s
AAS Registry Kafka Mem - Build and Start Docker Image	3m 41s
AAS Registry Log Mem - Build and Start Docker Image	3m 31s
AAS Registry Log MongoDB - Build and Start Docker Image	3m 25s
AAS Repository - Build and Start Docker Image	2m 41s
AASX File Server - Build and Start Docker Image	3m 15s
Concept Description Repository - Build and Start Docker Image	2m 46s
Submodel Registry Kafka Mem - Build and Start Docker Image	3m 43s
Submodel Registry Kafka MongoDB - Build and Start Docker Image	3m 8s
Submodel Registry Log Mem - Build and Start Docker Image	3m 32s
Submodel Registry Log MongoDB - Build and Start Docker Image	3m 22s
Submodel Repository - Build and Start Docker Image	2m 42s
Submodel Service - Build and Start Docker Image	2m 51s
	47m 29s

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