编写k8s测试例子

samples/OelotKube/ApiGateway/Dockerfile

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+FROM microsoft/dotnet:2.2-aspnetcore-runtime AS base
+WORKDIR /app
+EXPOSE 80
+
+FROM microsoft/dotnet:2.2-sdk AS build
+WORKDIR /src
+COPY ["ApiGateway/ApiGateway.csproj", "ApiGateway/"]
+RUN dotnet restore "ApiGateway/ApiGateway.csproj"
+COPY . .
+WORKDIR "/src/ApiGateway"
+RUN dotnet build "ApiGateway.csproj" -c Release -o /app
+
+FROM build AS publish
+RUN dotnet publish "ApiGateway.csproj" -c Release -o /app
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app .
+ENTRYPOINT ["dotnet", "ApiGateway.dll"]