Workaround failing nuget add

.github/workflows/run-build-and-acceptance-tests.yml

@@ -191,8 +191,6 @@ jobs:
         uses: actions/setup-dotnet@v1
         with:
           dotnet-version: ${{ matrix.dotnet-version }}
-      - run: mkdir -p ${{ runner.temp }}/opt/pulumi/nuget
-      - run: dotnet nuget add source ${{ runner.temp }}/opt/pulumi/nuget
       - name: Set up Node ${{ matrix.node-version }}
         uses: actions/setup-node@v2
         with:
@@ -275,7 +273,9 @@ jobs:
         with:
           name: pulumi-nuget-packages
           # path set to match PULUMI_LOCAL_NUGET
-          path: ${{ runner.temp }}/opt/pulumi/nuget
+          path: ${{ github.workspace }}/nuget
+      - run: |
+          dotnet nuget add source ${{ github.workspace }}/nuget
       - name: Verify Pulumi Version
         run: |
           which pulumi
@@ -287,7 +287,7 @@ jobs:
           echo "PULUMI_LOCAL_NUGET=$PULUMI_LOCAL_NUGET"
           ls $PULUMI_LOCAL_NUGET
         env:
-          PULUMI_LOCAL_NUGET: ${{ runner.temp }}/opt/pulumi/nuget
+          PULUMI_LOCAL_NUGET: ${{ github.workspace }}/nuget
       - name: Ensure dependencies for the Node SDK
         run: |
           cd sdk/nodejs
@@ -310,7 +310,7 @@ jobs:
         run: make TEST_ALL_DEPS= test_all
         env:
           PULUMI_NODE_MODULES: ${{ runner.temp }}/opt/pulumi/node_modules
-          PULUMI_LOCAL_NUGET: ${{ runner.temp }}/opt/pulumi/nuget
+          PULUMI_LOCAL_NUGET: ${{ github.workspace }}/nuget
           PULUMI_ROOT: ${{ runner.temp }}/opt/pulumi
       - name: Summarize Test Time by Package
         run: |