Use multi-stage builds for Rewarder

Tools/TestNetRewarder/docker/Dockerfile

@@ -1,13 +1,26 @@
 # Variables
-ARG IMAGE=mcr.microsoft.com/dotnet/sdk:7.0
+ARG BUILDER=mcr.microsoft.com/dotnet/sdk:7.0
+ARG IMAGE=${BUILDER}
 ARG APP_HOME=/app
 
-# Create
-FROM ${IMAGE}
+
+# Build
+FROM ${IMAGE} AS builder
 ARG APP_HOME
 
 WORKDIR ${APP_HOME}
 COPY ./Tools/TestNetRewarder ./Tools/TestNetRewarder
 COPY ./Framework ./Framework
 COPY ./ProjectPlugins ./ProjectPlugins
-CMD ["dotnet", "run", "--project", "Tools/TestNetRewarder"]
+RUN dotnet restore Tools/TestNetRewarder
+RUN dotnet publish Tools/TestNetRewarder -c Release -o out
+
+
+# Create
+FROM ${IMAGE}
+ARG APP_HOME
+ENV APP_HOME=${APP_HOME}
+
+WORKDIR ${APP_HOME}
+COPY --from=builder ${APP_HOME}/out .
+CMD dotnet ${APP_HOME}/TestNetRewarder.dll