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ViewsDocker image for .net 5
Typically I use following images for .net core 3.1 and it works fine.
FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
I have for experimental reason started a new .net 5 project and created dockerfile with following
FROM mcr.microsoft.com/dotnet/core/aspnet:5.0-buster-slim AS base
FROM mcr.microsoft.com/dotnet/core/sdk:5.0-buster AS build
and have following issue:
=> ERROR [internal] load metadata for mcr.microsoft.com/dotnet/core/sdk:5.0-buster 0.2s
=> ERROR [internal] load metadata for mcr.microsoft.com/dotnet/core/aspnet:5.0-buster-slim 0.2s
=> CANCELED [build 1/7] FROM mcr.microsoft.com/dotnet/core/sdk:5.0-buster 0.0s
=> => resolve mcr.microsoft.com/dotnet/core/sdk:5.0-buster 0.0s
=> [internal] load build context 0.0s
=> ERROR [base 1/2] FROM mcr.microsoft.com/dotnet/core/aspnet:5.0-buster-slim 0.0s
=> => resolve mcr.microsoft.com/dotnet/core/aspnet:5.0-buster-slim
2 answers
Answer question0
You do not have to write this yourself. A quick way to go about it is to use the dockerfile generator as explained by Julio Casal in this quick tutorial https://www.youtube.com/watch?v=wQSuZFd01tY.
A sample code for MyApp will look like
FROM mcr.microsoft.com/dotnet/aspnet:5.0 AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443
ENV ASPNETCORE_URLS=http://+:80
FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /src
COPY ["MyApp/MyApp.csproj", "MyApp/"]
RUN dotnet restore "MyApp/MyApp.csproj"
COPY . .
WORKDIR "/src/MyApp"
RUN dotnet build "MyApp.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "MyApp.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "MyApp.dll"]
0
As I read here, it is changed to:
FROM mcr.microsoft.com/dotnet/aspnet:5.0-buster-slim AS base
FROM mcr.microsoft.com/dotnet/sdk:5.0-buster-slim AS build
It is also mentioned on the docker hub with more info:
As part of the .NET 5.0 release, all .NET Docker images (including .NET Core 2.1 and 3.1) have transitioned to a new set of Docker repositories described below. Updates will continue to be made to supported tags in the old repository locations for backwards compatibility. Please update any repository references to these new names. For more information see the .NET 5.0 repository rename announcement.
EDIT: Image descriptions:
| Image | Comments |
|---|---|
| mcr.microsoft.com/dotnet/runtime:5.0 | .NET 5 multi-architecture: Supports Linux and Windows Nano Server depending on the Docker host. |
| mcr.microsoft.com/dotnet/aspnet:5.0 | ASP.NET Core 5.0 multi-architecture: Supports Linux and Windows Nano Server depending on the Docker host. The aspnetcore image has a few optimizations for ASP.NET Core. |
| mcr.microsoft.com/dotnet/aspnet:5.0-buster-slim | .NET 5 runtime-only on Linux Debian distro |
| mcr.microsoft.com/dotnet/aspnet:5.0-nanoserver-1809 | .NET 5 runtime-only on Windows Nano Server (Windows Server version 1809) |
Image description reference.