Move away from 2.1.10 to 2.1

IoTModules/c#/publisher/docker/Dockerfile.nanoserver-amd64

@@ -4,7 +4,7 @@ COPY . ./
 RUN dotnet restore \src\IoTModules\c#\publisher\Publisher.csproj
 RUN dotnet publish \src\IoTModules\c#\publisher\Publisher.csproj -c Release -o out
 
-FROM mcr.microsoft.com/dotnet/core/runtime:2.1.10-nanoserver-1809
+FROM mcr.microsoft.com/dotnet/core/runtime:2.1-nanoserver-1809
 WORKDIR /app
 COPY --from=build-env /src/IoTModules/c#/publisher/out/ .
 

IoTModules/c#/subscriber/docker/Dockerfile.alpine-amd64

@@ -1,4 +1,4 @@
-ARG base_tag=2.1.10-alpine3.7
+ARG base_tag=2.1-alpine3.7
 
 FROM microsoft/dotnet:2.1-sdk AS build-env
 WORKDIR /src

IoTModules/c#/subscriber/docker/Dockerfile.bionic-arm32v7

@@ -1,4 +1,4 @@
-ARG base_tag=2.1.10-bionic-arm32v7
+ARG base_tag=2.1-bionic-arm32v7
 FROM microsoft/dotnet:2.1-sdk AS build-env
 WORKDIR /src
 COPY . ./

IoTModules/c#/subscriber/docker/Dockerfile.nanoserver-amd64

@@ -4,7 +4,7 @@ COPY . ./
 RUN dotnet restore \src\IoTModules\c#\subscriber\Subscriber.csproj
 RUN dotnet publish \src\IoTModules\c#\subscriber\Subscriber.csproj -c Release -o out
 
-FROM mcr.microsoft.com/dotnet/core/aspnet:2.1.10-nanoserver-1809
+FROM mcr.microsoft.com/dotnet/core/aspnet:2.1-nanoserver-1809
 WORKDIR /app
 COPY --from=build-env /src/IoTModules/c#/subscriber/out/ .
 

QuickStart/c#/publisher/docker/Dockerfile.nanoserver-amd64

@@ -4,7 +4,7 @@ COPY . ./
 RUN dotnet restore \src\QuickStart\c#\publisher\publisher.csproj
 RUN dotnet publish \src\QuickStart\c#\publisher\publisher.csproj -c Release -o out
 
-FROM mcr.microsoft.com/dotnet/core/runtime:2.1.10-nanoserver-1809
+FROM mcr.microsoft.com/dotnet/core/runtime:2.1-nanoserver-1809
 WORKDIR /app
 COPY --from=build-env /src/QuickStart/c#/publisher/out/ .