Dockerfile

# https://hub.docker.com/_/microsoft-dotnet
FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
WORKDIR /app
EXPOSE 80
EXPOSE 443

# copy csproj and restore as distinct layers
COPY ComplexApp.Core/*.csproj ComplexApp.Core/
COPY ComplexApp.Web/*.csproj ComplexApp.Web/
RUN dotnet restore ComplexApp.Web

COPY . .
RUN dotnet publish ComplexApp.Web -c Release -o out --no-restore

# final stage/image
FROM mcr.microsoft.com/dotnet/aspnet:6.0
ENV ASPNETCORE_URLS=http://*:${PORT}
WORKDIR /app
COPY --from=build /app/out .

ENTRYPOINT ["dotnet", "ComplexApp.Web.dll"]