Change Image Microsoft dotNet to xcomponent dotNet (#106)

* change img docker for XComponent img mono dotnet

* change image dockerfile to xcomponent_mono

Author: fle-bach

.circleci/config.yml

@@ -63,17 +63,11 @@ jobs:
 
   build_integration_test:
     docker:
-      - image: microsoft/dotnet:2.1-sdk
+      - image: xcomponent/mono-dotnet-node-xvfb:1.0.0
     steps:
       - *restore_repo
       - *generate_nuget_shasum
       - *restore_nuget
-      - run:
-          name: Install Key for mono
-          command: apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
-      - run:
-          name: Install mono 5.16.0.179
-          command: echo "deb http://download.mono-project.com/repo/debian stable-stretch/snapshots/5.16.0.179 main" > /etc/apt/sources.list.d/mono-official-stable.list && apt-get update && apt-get install -y mono-devel
       - attach_workspace:
           at: /home/circleci/project
       - run:

docker/integration_tests/dockerScripts/XCContainer/Dockerfile

@@ -1,4 +1,4 @@
-FROM mono:5.12
+FROM xcomponent/mono:1.0.0
 USER root
 RUN curl -sL https://deb.nodesource.com/setup_10.x | bash -
 RUN apt-get update && apt-get install -y \