新增learn-kubernetes（https://github.com/yyong-brs/learn-kubernetes）相关文件

learn/learn-kubernetes-master/kiamol/ch20/docker-images/todo-list/docker/save-handler/Dockerfile

@@ -0,0 +1,22 @@
+FROM mcr.microsoft.com/dotnet/core/sdk:3.1.301 AS builder
+
+WORKDIR /src
+COPY src/entities/ToDoList.Entities.csproj ./entities/
+COPY src/messaging/ToDoList.Messaging.csproj ./messaging/
+COPY src/model/ToDoList.Model.csproj ./model/
+COPY src/save-handler/ToDoList.SaveHandler.csproj ./save-handler/
+
+WORKDIR /src/save-handler
+RUN dotnet restore
+
+COPY src /src
+RUN dotnet publish -c Release -o /out ToDoList.SaveHandler.csproj
+
+# app image
+FROM mcr.microsoft.com/dotnet/core/runtime:3.1.5
+
+WORKDIR /app
+ENTRYPOINT ["dotnet", "ToDoList.SaveHandler.dll"]
+ENV Events__events.todo.itemsaved__Publish="true"
+
+COPY --from=builder /out/ .

learn/learn-kubernetes-master/kiamol/ch20/docker-images/todo-list/docker/web/Dockerfile

@@ -0,0 +1,32 @@
+FROM mcr.microsoft.com/dotnet/core/sdk:3.1.301 AS builder
+
+WORKDIR /src
+COPY src/entities/ToDoList.Entities.csproj ./entities/
+COPY src/messaging/ToDoList.Messaging.csproj ./messaging/
+COPY src/model/ToDoList.Model.csproj ./model/
+COPY src/web/ToDoList.csproj ./web/
+
+WORKDIR /src/web
+RUN dotnet restore
+
+COPY src/ /src
+RUN dotnet publish -c Release -o /out ToDoList.csproj
+
+# app image
+FROM mcr.microsoft.com/dotnet/core/aspnet:3.1.5
+
+WORKDIR /app
+ENTRYPOINT ["dotnet", "ToDoList.dll"]
+
+# elevated for access to Sqlite db
+ENV DATA_DIRECTORY="/data"\
+    USER="root"
+
+ENV ConfigController__Enabled="false" \
+    ConnectionStrings__ToDoDb="Filename=/data/todo-list.db" \
+    Logging__LogLevel__Default="Error"
+
+VOLUME $DATA_DIRECTORY
+USER $USER
+
+COPY --from=builder /out/ .