Change some practice

practice/9.local-development/app/Dockerfile

@@ -0,0 +1,8 @@
+FROM python:3.6.8
+
+COPY requirements.txt  /app/requirements.txt
+RUN pip install -r /app/requirements.txt
+
+COPY . /app
+
+ENTRYPOINT python /app/app.py

practice/9.local-development/app/app.py

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+#!/usr/bin/env python
+
+import os
+
+from flask import Flask
+from flask import request
+
+config = {
+        "port": os.environ.get('PORT', 8000),
+        "debug": os.environ.get('DEBUG', False)
+}
+
+app = Flask(__name__)
+
+@app.route("/")
+def hello():
+    return "Hello, Updated!"
+
+@app.route("/api/sum")
+def sum():
+    a = request.args.get('a')
+    b = request.args.get('b')
+    return "{0}+{1}={2}".format(a, b, int(a)+int(b))
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=config["port"], debug=config["debug"])

practice/9.local-development/app/kube/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: myapp
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: myapp
+  template:
+    metadata:
+      labels:
+        app: myapp
+    spec:
+      containers:
+        - name: api
+          image: myapp:dev
+          env:
+            - name: PYTHONUNBUFFERD
+              value: "1"
+            - name: DEBUG
+              value: "True"
+          ports:
+            - containerPort: 8000
+          volumeMounts:
+            - name: code
+              mountPath: /app
+      volumes:
+        - name: code
+          hostPath:
+            path: /app

practice/9.local-development/app/kube/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: myapp
+spec:
+  type: LoadBalancer
+  selector:
+    app: myapp
+  ports:
+    - port: 8000
+      targetPort: 8000

practice/9.local-development/app/requirements.txt

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+Flask==1.1.2
+itsdangerous==1.1.0
+Jinja2==2.11.2
+MarkupSafe==1.1.1
+Werkzeug==1.0.1