Adding the storage variables to the dockerrun.sh file so that they are set as env variables in docker.

scripts/dockerrun.sh

@@ -126,5 +126,8 @@ docker run $INTERACTIVE -t --rm --sig-proxy=true \
     -e NUGET_FEED_URL \
     -e NUGET_API_KEY \
     -e GITHUB_PASSWORD \
+    -e STORAGE_KEY \
+    -e STORAGE_ACCOUNT \
+    -e STORAGE_CONTAINER \
     $DOTNET_BUILD_CONTAINER_TAG \
     $BUILD_COMMAND "$@"