#1 - dockerize app.py

README.md

@@ -15,6 +15,24 @@ pip install flask
 WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
  * Running on http://127.0.0.1:5000
 Press CTRL+C to quit
+```
+
+Kubernetes readiness check and load balancer health on /health
+```
+http://127.0.0.1:5000/health
+```
+
+### Building
+```
+docker rm biometric-backend-python
+docker build -t biometric-backend-python . 
+docker run -d -p 8081:5000 --name biometric-backend-python biometric-backend-python:latest
+docker ps                                                                           
+CONTAINER ID   IMAGE                             COMMAND                  CREATED         STATUS         PORTS                    NAMES
+763ca7856530   biometric-backend-python:latest   "python3 -m flask ru…"   3 seconds ago   Up 3 seconds   0.0.0.0:8081->5000/tcp   biometric-backend-python
+
+curl http://127.0.0.1:8081/health
+{ "health" : true }
 
 ```
 

src/Dockerfile

@@ -0,0 +1,15 @@
+# docker rm biometric-backend-python
+# docker build -t biometric-backend-python . 
+# docker run -d -p 8081:5000 --name biometric-backend-python biometric-backend-python:latest
+FROM python:3.10-slim-buster
+
+WORKDIR /python-server
+
+# enable when we have dependencies
+COPY requirements.txt requirements.txt
+RUN pip3 install -r requirements.txt
+
+COPY app.py .
+#COPY . .
+
+CMD [ "python3", "-m" , "flask", "run", "--host=0.0.0.0" ]

src/app.py

@@ -13,5 +13,6 @@ def hello_world():
 def hello():
     return '{ "health" : true }'
 
+# debug only when not running as a container
 if __name__ == "__main__":
     app.run(debug=True)

src/requirements.txt

@@ -0,0 +1 @@
+flask