Restore prior to build.

Dockerfile

@@ -1,8 +1,9 @@
-FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build-env
+FROM --platform=$TARGETPLATFORM mcr.microsoft.com/dotnet/sdk:8.0 AS build-env
 WORKDIR /app
 
 # Copy everything else and build
 COPY . ./
+RUN dotnet restore
 
 # Build with platform-specific .Net RID
 RUN if [ "$TARGETPLATFORM" = "linux/amd64" ]; then \
@@ -23,7 +24,7 @@ RUN if [ "$TARGETPLATFORM" = "linux/amd64" ]; then \
 #RUN dotnet publish src/fhir-candle/fhir-candle.csproj -c Release -o out
 
 # Build runtime image
-FROM mcr.microsoft.com/dotnet/aspnet:8.0
+FROM --platform=$TARGETPLATFORM mcr.microsoft.com/dotnet/aspnet:8.0
 WORKDIR /app
 COPY --from=build-env /app/out .
 ENTRYPOINT ["dotnet", "fhir-candle.dll"]