Updated dotnet version

Dockerfile

@@ -1,6 +1,6 @@
-FROM microsoft/dotnet:2.1.401-sdk
+FROM microsoft/dotnet:2.2.100-sdk
 
-ENV SONAR_SCANNER_MSBUILD_VERSION 4.3.1.1372
+ENV SONAR_SCANNER_MSBUILD_VERSION 4.4.2.1543
 ENV DOCKER_VERSION 17.06.2
 
 # Install Java 8
@@ -33,4 +33,4 @@ RUN apt-get install -y unzip \
 # Cleanup
 RUN apt-get -q autoremove \
     && apt-get -q clean -y \
-    && rm -rf /var/lib/apt/lists/* /var/cache/apt/*.bin
+    && rm -rf /var/lib/apt/lists/* /var/cache/apt/*.bin

README.md

@@ -6,8 +6,8 @@ It also allows you to run Docker in Docker using a docker.sock mount.
 
 This image was built with the following components:
 
-* dotnet-sdk-2.1.401 (stretch)
-* SonarQube MSBuild Scanner 4.3.1.1372
+* dotnet-sdk-2.2.100 (stretch)
+* SonarQube MSBuild Scanner 4.4.2.1543
 * OpenJDK Java 8 (required for Sonar Scanner)
 * Docker binaries 17.06.2 (for running Docker in Docker using the docker.sock mount)
 
@@ -124,4 +124,4 @@ The above code will:
 
 The above examples already implement the code-coverage analysis, **provided you add the coverlet NuGet package to your unit test project**.
 If you want to know more, check: <https://medium.com/@equiman/net-core-unit-test-and-code-coverage-with-visual-studio-code-1a384b462c5f>.
-Also, coverlet documentation here: <https://github.com/tonerdo/coverlet/>.
+Also, coverlet documentation here: <https://github.com/tonerdo/coverlet/>.