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

learn/learn-kubernetes-master/kiamol/ch21/docker-images/kubeless-cli/Dockerfile

@@ -0,0 +1,20 @@
+#using node to match base image for serverless cli
+FROM node:12  
+
+ENV KUBELESS_VERSION="v1.0.7" \
+    KUBERNETES_VERSION="1.18.5" 
+
+RUN curl -LO https://github.com/kubeless/kubeless/releases/download/${KUBELESS_VERSION}/kubeless_linux-amd64.zip && \
+    unzip kubeless_linux-amd64.zip && \
+    rm -f kubeless_linux-amd64.zip && \
+    chmod +x bundles/kubeless_linux-amd64/kubeless && \
+    mv bundles/kubeless_linux-amd64/kubeless /usr/local/bin/
+
+RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/v${KUBERNETES_VERSION}/bin/linux/amd64/kubectl && \
+    chmod +x kubectl && \
+    mv kubectl /usr/local/bin/
+
+COPY start.sh /
+RUN chmod +x /start.sh
+CMD /start.sh
+WORKDIR /kiamol