Add nexus repo to Dockerfiles.

Issue-ID: SIM-38
Change-Id: I4f8523a75c976630545570123cdeb005470e9529
Signed-off-by: Alex Stancu <alexandru.stancu@highstreet-technologies.com>
diff --git a/ntsimulator/deploy/nts-manager/ubuntu.Dockerfile b/ntsimulator/deploy/nts-manager/ubuntu.Dockerfile
index a119cce..8d2c5c2 100644
--- a/ntsimulator/deploy/nts-manager/ubuntu.Dockerfile
+++ b/ntsimulator/deploy/nts-manager/ubuntu.Dockerfile
@@ -17,7 +17,7 @@
 #### DEVICE ####
 ################
 
-FROM o-ran-sc/nts-ng-base:latest
+FROM nexus3.o-ran-sc.org:10001/o-ran-sc/nts-ng-base:latest
 LABEL maintainer="alexandru.stancu@highstreet-technologies.com / adrian.lita@highstreet-technologies.com"
 
 # ntsim-ng configuration and deployment
diff --git a/ntsimulator/deploy/o-ran/ubuntu.Dockerfile b/ntsimulator/deploy/o-ran/ubuntu.Dockerfile
index 329fa7f..11fc3b5 100644
--- a/ntsimulator/deploy/o-ran/ubuntu.Dockerfile
+++ b/ntsimulator/deploy/o-ran/ubuntu.Dockerfile
@@ -17,7 +17,7 @@
 #### DEVICE ####
 ################
 
-FROM o-ran-sc/nts-ng-base:latest
+FROM nexus3.o-ran-sc.org:10001/o-ran-sc/nts-ng-base:latest
 LABEL maintainer="alexandru.stancu@highstreet-technologies.com / adrian.lita@highstreet-technologies.com"
 
 # ntsim-ng configuration and deployment
diff --git a/ntsimulator/deploy/x-ran/ubuntu.Dockerfile b/ntsimulator/deploy/x-ran/ubuntu.Dockerfile
index 329fa7f..11fc3b5 100644
--- a/ntsimulator/deploy/x-ran/ubuntu.Dockerfile
+++ b/ntsimulator/deploy/x-ran/ubuntu.Dockerfile
@@ -17,7 +17,7 @@
 #### DEVICE ####
 ################
 
-FROM o-ran-sc/nts-ng-base:latest
+FROM nexus3.o-ran-sc.org:10001/o-ran-sc/nts-ng-base:latest
 LABEL maintainer="alexandru.stancu@highstreet-technologies.com / adrian.lita@highstreet-technologies.com"
 
 # ntsim-ng configuration and deployment