diff --git a/Dockerfile b/Dockerfile
index 639a1196c6..963027b49c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@ RUN apk add curl git zlib zlib-dev autoconf g++ make libpng-dev gifsicle alpine-
  && yarn install \
  && mv dist /dist
 
-FROM mcr.microsoft.com/dotnet/sdk:${DOTNET_VERSION}-buster as builder
+FROM mcr.microsoft.com/dotnet/sdk:${DOTNET_VERSION}-buster-slim as builder
 WORKDIR /repo
 COPY . .
 ENV DOTNET_CLI_TELEMETRY_OPTOUT=1