add cdk8s-guestbook dir

cdk8s-guestbook/Dockerfile

@@ -0,0 +1,17 @@
+FROM argoproj/argocd:latest
+
+USER root
+
+RUN apt-get update && \
+    apt-get install -y \
+        curl \
+        python3-pip && \
+    apt-get clean && \
+    pip3 install pipenv
+
+RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
+RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
+RUN apt-get update && apt-get install -y yarn
+RUN yarn global add npm cdk8s-cli
+
+USER argocd

cdk8s-guestbook/Pipfile

@@ -0,0 +1,10 @@
+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[requires]
+python_version = "3.7"
+
+[packages]
+cdk8s = "*"

cdk8s-guestbook/cdk8s.yaml

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+language: python
+app: pipenv run ./main.py
+imports:
+  - k8s

cdk8s-guestbook/config.yml

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+apiVersion: v1
+data:
+  configManagementPlugins: |
+    - name: cdk8s
+      init:
+        command: ["bash"]
+        args: ["-c", "pipenv install && cdk8s import -l python && cdk8s synth"]
+      generate:
+        command: ["bash"]
+        args: ["-c", "cat dist/*"]
+kind: ConfigMap
+metadata:
+  annotations:
+  labels:
+    app.kubernetes.io/name: argocd-cm
+    app.kubernetes.io/part-of: argocd
+  name: argocd-cm
+  namespace: argocd
+  selfLink: /api/v1/namespaces/argocd/configmaps/argocd-cm

cdk8s-guestbook/main.py

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+#!/usr/bin/env python
+from constructs import Construct
+from cdk8s import App, Chart
+
+from imports import k8s
+
+
+class MyChart(Chart):
+    def __init__(self, scope: Construct, ns: str):
+        super().__init__(scope, ns)
+
+        label = {"app": "guestbook-ui"}
+
+        k8s.Service(self, 'service',
+                    spec=k8s.ServiceSpec(
+                      type='LoadBalancer',
+                      ports=[k8s.ServicePort(port=80, target_port=k8s.IntOrString.from_number(80))],
+                      selector=label))
+
+        k8s.Deployment(self, 'deployment',
+                       spec=k8s.DeploymentSpec(
+                         replicas=1,
+                         selector=k8s.LabelSelector(match_labels=label),
+                         template=k8s.PodTemplateSpec(
+                           metadata=k8s.ObjectMeta(labels=label),
+                           spec=k8s.PodSpec(containers=[
+                             k8s.Container(
+                               name='guestbook-ui',
+                               image='gcr.io/heptio-images/ks-guestbook-demo:0.2',
+                               ports=[k8s.ContainerPort(container_port=80)])]))))
+
+
+app = App()
+MyChart(app, "cdk8s-guestbook")
+
+app.synth()