fix: simplify further

Author: fancybear-dev

Dockerfile

@@ -2,7 +2,7 @@
 
 ARG WINDOWS_VERSION
 
-FROM mcr.microsoft.com/windows/servercore:$WINDOWS_VERSION
+FROM mcr.microsoft.com/windows/servercore:$WINDOWS_VERSION as downloader
 
 ARG VECTOR_VERSION
 
@@ -14,6 +14,10 @@ SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPref
 
 RUN /windows/temp/install-vector.ps1 -VectorVersion $VECTOR_VERSION
 
+FROM mcr.microsoft.com/windows/nanoserver:$WINDOWS_VERSION as runtime
+
+COPY --from=downloader "C:/Program Files/Vector" "C:/Program Files/Vector"
+
 RUN setx /M PATH "%PATH%;C:\Program Files\Vector\bin"
 
 ENTRYPOINT ["vector.exe"]