get rid of ubuntu_build_cuda and point ubuntu_cu101 to base gpu inste…

…ad of cuda compat

ci/docker/Dockerfile.build.ubuntu

@@ -160,8 +160,3 @@ RUN export DEBIAN_FRONTEND=noninteractive && \
     apt install -y  --no-install-recommends \
         cuda-10-1 && \
     rm -rf /var/lib/apt/lists/*
-
-
-FROM gpu as gpuwithcompatenv
-# TVMOP requires /usr/local/cuda/compat is no LD_LIBRARY_PATH.
-# This should be fixed and deleted.

ci/docker/docker-compose.yml

@@ -110,23 +110,12 @@ services:
     build:
       context: .
       dockerfile: Dockerfile.build.ubuntu
-      target: gpuwithcompatenv
+      target: gpu
       args:
         BASE_IMAGE: nvidia/cuda:10.1-cudnn7-devel-ubuntu18.04
       cache_from:
         - build.ubuntu_gpu_cu101:latest
         - mxnetci/build.ubuntu_gpu_cu101:latest
-  ubuntu_build_cuda:
-    image: build.ubuntu_build_cuda:latest
-    build:
-      context: .
-      dockerfile: Dockerfile.build.ubuntu
-      target: gpuwithcudaruntimelibs
-      args:
-        BASE_IMAGE: nvidia/cuda:10.1-cudnn7-devel-ubuntu18.04
-      cache_from:
-        - build.ubuntu_build_cuda:latest
-        - mxnetci/build.ubuntu_build_cuda:latest
   ###################################################################################################
   # Dockerfile.publish.test based images used for testing binary artifacts on minimal systems.
   ###################################################################################################