Dockerfile to host dotnet core apps like blazor (dotnet core 3.0)

Dockerfile

# Create build img
FROM mcr.microsoft.com/dotnet/core/sdk:3.0 AS build
WORKDIR /app

# Copy csproj and restore as distinct layers
COPY *.sln .
COPY ./{PROJECT_NAME}/*.csproj ./{PROJECT_NAME}/
RUN dotnet restore

# Copy everything else and build app
COPY ./{PROJECT_NAME}/. ./{PROJECT_NAME}/
RUN dotnet publish -c Release -o out

# Create runtime image
FROM mcr.microsoft.com/dotnet/core/aspnet:3.0 AS runtime
WORKDIR /app
COPY --from=build /app/out ./
ENTRYPOINT ["dotnet", "{PROJECT_NAME}.dll"]