diff --git a/.gitignore b/.gitignore
index abf7674560..1f91a11604 100644
--- a/.gitignore
+++ b/.gitignore
@@ -210,3 +210,4 @@ obj-Skia/
 coc-settings.json
 .ccls-cache
 .ccls
+sdk
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 11ef36d43f..bc60f84107 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -4,19 +4,18 @@ jobs:
     vmImage: 'ubuntu-20.04'
   steps:
   - task: CmdLine@2
-    displayName: 'Install Nuke'
+    displayName: 'Download SDK'
     inputs:
       script: |
-         dotnet tool install --global Nuke.GlobalTool --version 0.24.0
+         ./get-sdk.sh
   - task: CmdLine@2
-    displayName: 'Run Nuke'
+    displayName: 'Run Build'
     inputs:
       script: |
-        export PATH="$PATH:$HOME/.dotnet/tools"
+        export PATH="`pwd`/sdk:$PATH"
         dotnet --info
         printenv
-        nuke --target CiAzureLinux --configuration=Release
-
+        ./build.sh --target CiAzureLinux --configuration=Release
   - task: PublishTestResults@2
     inputs:
       testResultsFormat: 'VSTest'
@@ -29,11 +28,11 @@ jobs:
   pool:
     vmImage: 'macOS-10.15'
   steps:
-  - task: UseDotNet@2
-    displayName: 'Use .NET Core SDK 3.1.401'
+  - task: CmdLine@2
+    displayName: 'Download SDK'
     inputs:
-      version: 3.1.401
-
+      script: |
+         ./get-sdk.sh
   - task: CmdLine@2
     displayName: 'Install Mono 5.18'
     inputs:
@@ -45,6 +44,7 @@ jobs:
     displayName: 'Generate avalonia-native'
     inputs:
       script: |
+        export PATH="`pwd`/sdk:$PATH"
         cd src/tools/MicroComGenerator; dotnet run -i ../../Avalonia.Native/avn.idl --cpp ../../../native/Avalonia.Native/inc/avalonia-native.h
 
   - task: Xcode@5
@@ -58,13 +58,7 @@ jobs:
       args: '-derivedDataPath ./'
 
   - task: CmdLine@2
-    displayName: 'Install Nuke'
-    inputs:
-      script: |
-       dotnet tool install --global Nuke.GlobalTool --version 0.24.0
-
-  - task: CmdLine@2
-    displayName: 'Run Nuke'
+    displayName: 'Run Build'
     inputs:
       script: |
         export COREHOST_TRACE=0
@@ -72,10 +66,10 @@ jobs:
         export DOTNET_CLI_TELEMETRY_OPTOUT=1
         which dotnet
         dotnet --info
-        export PATH="$PATH:$HOME/.dotnet/tools"
+        export PATH="`pwd`/sdk:$PATH"
         dotnet --info
         printenv
-        nuke --target CiAzureOSX --configuration Release --skip-previewer
+        ./build.sh --target CiAzureOSX --configuration Release --skip-previewer
 
   - task: PublishTestResults@2
     inputs:
diff --git a/build.sh b/build.sh
index 7703e90a78..9532b4fbe0 100755
--- a/build.sh
+++ b/build.sh
@@ -20,57 +20,11 @@ SCRIPT_DIR=$(cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd)
 ###########################################################################
 
 BUILD_PROJECT_FILE="$SCRIPT_DIR/nukebuild/_build.csproj"
-TEMP_DIRECTORY="$SCRIPT_DIR//.tmp"
-
-DOTNET_GLOBAL_FILE="$SCRIPT_DIR//global.json"
-DOTNET_INSTALL_URL="https://raw.githubusercontent.com/dotnet/cli/master/scripts/obtain/dotnet-install.sh"
-DOTNET_CHANNEL="Current"
 
 export DOTNET_CLI_TELEMETRY_OPTOUT=1
 export DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1
 export NUGET_XMLDOC_MODE="skip"
 
-###########################################################################
-# EXECUTION
-###########################################################################
-
-function FirstJsonValue {
-    perl -nle 'print $1 if m{"'$1'": "([^"\-]+)",?}' <<< ${@:2}
-}
-
-# If global.json exists, load expected version
-if [ -f "$DOTNET_GLOBAL_FILE" ]; then
-    DOTNET_VERSION=$(FirstJsonValue "version" $(cat "$DOTNET_GLOBAL_FILE"))
-    if [ "$DOTNET_VERSION" == ""  ]; then
-        unset DOTNET_VERSION
-    fi
-fi
-
-# If dotnet is installed locally, and expected version is not set or installation matches the expected version
-if [[ -x "$(command -v dotnet)" && (-z ${DOTNET_VERSION+x} || $(dotnet --version) == "$DOTNET_VERSION") || "$SKIP_DOTNET_DOWNLOAD" == "1" ]]; then
-    export DOTNET_EXE="$(command -v dotnet)"
-else
-    DOTNET_DIRECTORY="$TEMP_DIRECTORY/dotnet-unix"
-    export DOTNET_EXE="$DOTNET_DIRECTORY/dotnet"
-    
-    # Download install script
-    DOTNET_INSTALL_FILE="$TEMP_DIRECTORY/dotnet-install.sh"
-    mkdir -p "$TEMP_DIRECTORY"
-    curl -Lsfo "$DOTNET_INSTALL_FILE" "$DOTNET_INSTALL_URL"
-    chmod +x "$DOTNET_INSTALL_FILE"
-    
-    # Install by channel or version
-    if [ -z ${DOTNET_VERSION+x} ]; then
-        "$DOTNET_INSTALL_FILE" --install-dir "$DOTNET_DIRECTORY" --channel "$DOTNET_CHANNEL" --no-path
-    else
-        "$DOTNET_INSTALL_FILE" --install-dir "$DOTNET_DIRECTORY" --version "$DOTNET_VERSION" --no-path
-    fi
-    "$DOTNET_INSTALL_FILE" --install-dir "$DOTNET_DIRECTORY" --version 3.1.20 --runtime dotnet
-    "$DOTNET_INSTALL_FILE" --install-dir "$DOTNET_DIRECTORY" --version 3.1.20 --runtime aspnetcore
-fi
-
-export PATH=$DOTNET_DIRECTORY:$PATH
-
-echo "Microsoft (R) .NET Core SDK version $("$DOTNET_EXE" --version)"
+dotnet --info
 
-"$DOTNET_EXE" run --project "$BUILD_PROJECT_FILE" -- ${BUILD_ARGUMENTS[@]}
+dotnet run --project "$BUILD_PROJECT_FILE" -- ${BUILD_ARGUMENTS[@]}
diff --git a/get-sdk.sh b/get-sdk.sh
new file mode 100755
index 0000000000..4427948864
--- /dev/null
+++ b/get-sdk.sh
@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+SCRIPT_DIR="$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+SDK_DIR=$SCRIPT_DIR/sdk
+
+DOTNET_INSTALL_FILE="$SDK_DIR/dotnet-install.sh"
+DOTNET_INSTALL_URL="https://raw.githubusercontent.com/dotnet/cli/master/scripts/obtain/dotnet-install.sh"
+
+DOTNET_VERSION=5.0.302
+
+mkdir -p "$SDK_DIR"
+
+if [ ! -f "$DOTNET_INSTALL_FILE" ]; then
+	curl -Lsfo "$DOTNET_INSTALL_FILE" "$DOTNET_INSTALL_URL"
+	chmod +x "$DOTNET_INSTALL_FILE"
+fi
+
+"$DOTNET_INSTALL_FILE" --install-dir "$SDK_DIR" --version 5.0.302
+"$DOTNET_INSTALL_FILE" --install-dir "$SDK_DIR" --version 3.1.20 --runtime dotnet
+"$DOTNET_INSTALL_FILE" --install-dir "$SDK_DIR" --version 3.1.20 --runtime aspnetcore
+
+