diff --git a/al2/x86_64/standard/3.0/Dockerfile b/al2/x86_64/standard/3.0/Dockerfile
index 55c98f0f..26bf6588 100644
--- a/al2/x86_64/standard/3.0/Dockerfile
+++ b/al2/x86_64/standard/3.0/Dockerfile
@@ -422,8 +422,10 @@ RUN  n $NODE_12_VERSION && npm install --save-dev -g -f grunt && npm install --s
 #=======================End of layer: runtimes_2  =================
 FROM runtimes_2 AS runtimes_3
 
-#DotNet 3.1
+# .NET Core
 ENV DOTNET_31_SDK_VERSION="3.1.419"
+ENV DOTNET_5_SDK_VERSION="5.0.408"
+ENV DOTNET_6_SDK_VERSION="6.0.301"
 ENV DOTNET_ROOT="/root/.dotnet"
 
 # Add .NET Core 3.1 Global Tools install folder to PATH
@@ -431,6 +433,16 @@ RUN /usr/local/bin/dotnet-install.sh -v $DOTNET_31_SDK_VERSION \
     && dotnet --list-sdks \
     && rm -rf /tmp/*
 
+# Add .NET Core 5 Global Tools install folder to PATH
+RUN  /usr/local/bin/dotnet-install.sh -v $DOTNET_5_SDK_VERSION \
+     && dotnet --list-sdks \
+     && rm -rf /tmp/*
+
+# Add .NET Core 6 Global Tools install folder to PATH
+RUN  /usr/local/bin/dotnet-install.sh -v $DOTNET_6_SDK_VERSION \
+     && dotnet --list-sdks \
+     && rm -rf /tmp/*
+
 ## Trigger the population of the local package cache
 ENV NUGET_XMLDOC_MODE skip
 RUN set -ex \
diff --git a/al2/x86_64/standard/3.0/runtimes.yml b/al2/x86_64/standard/3.0/runtimes.yml
index 6357b3c8..0a5eef4d 100644
--- a/al2/x86_64/standard/3.0/runtimes.yml
+++ b/al2/x86_64/standard/3.0/runtimes.yml
@@ -124,3 +124,12 @@ runtimes:
       3.1:
         commands:
           - echo "Installing .NET version 3.1 ..."
+          - test -f "global.json" && echo "Using provided global.json" || dotnet new globaljson --sdk-version $DOTNET_31_SDK_VERSION
+      5.0:
+        commands:
+          - echo "Installing .NET version 5.0 ..."
+          - test -f "global.json" && echo "Using provided global.json" || dotnet new globaljson --sdk-version $DOTNET_5_SDK_VERSION
+      6.0:
+        commands:
+          - echo "Installing .NET version 6.0 ..."
+          - test -f "global.json" && echo "Using provided global.json" || dotnet new globaljson --sdk-version $DOTNET_6_SDK_VERSION
\ No newline at end of file