The specified framework 'Microsoft.AspNetCore.All', version '2.1.2' was not found

Question

I create my application and it successfully creates the docker container. When I try and run it

docker run -it --name myapp myapp:latest

I get the following error:

The specified framework 'Microsoft.AspNetCore.All', version '2.1.2' was not found.
...
- The following versions are installed:
      2.1.1 at [/usr/share/dotnet/shared/Microsoft.AspNetCore.All]

When I log into the container, I can see that, in the /usr/share/dotnet/shared/Microsoft.AspNetCore.All folder, there is one subfolder called 2.1.2 .

I can't figure out why it's saying that 2.1.1 is installed and 2.1.2 is not??

The following is my Dockerfile:

FROM microsoft/dotnet:2.1.400-sdk-stretch AS base
WORKDIR /app
EXPOSE 80

FROM microsoft/dotnet:2.1.400-sdk-stretch AS build
WORKDIR /src
COPY source/application/MyApp/MyApp.csproj source/application/MyApp/
COPY source/application/MyApp.DependentProject/MyApp.DependentProject.csproj source/application/MyApp/
RUN dotnet restore source/application/MyApp/MyApp.csproj
COPY . .
WORKDIR /src/source/application/MyApp
RUN dotnet build MyApp.csproj -c Release -o /app

FROM build AS publish
RUN dotnet publish MyApp.csproj -c Release -o /app

FROM base AS final
WORKDIR /app
COPY --from=publish /app .
ENTRYPOINT ["dotnet", "MyApp.dll"]

Answer 1

You could try changing:

FROM microsoft/dotnet:2.1.400-sdk-stretch AS base

to

FROM microsoft/dotnet AS base

or

FROM microsoft/dotnet:2.1.2-sdk AS base

See the docker docs and Microsoft docs on dotnet core and docker for further examples