switch to python:3.7-alpine for GCR hellopy base image

Author: ypwong99

src/setup/deployment/raw-code/serverless/gcr/hellopy/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.7-slim
+FROM python:3.7-alpine
 
 RUN pip install Flask gunicorn
 

src/setup/deployment/raw-code/serverless/gcr/hellopy/app.py

@@ -1,11 +1,11 @@
+import json
 import os
 import time
-import json
-
 from flask import Flask, request
 
 app = Flask(__name__)
 
+
 @app.route('/')
 def hello_world():
     incr_limit = 0
@@ -33,5 +33,6 @@ def simulate_work(incr):
     while num < incr:
         num += 1
 
+
 if __name__ == "__main__":
-   app.run(debug=True,host='0.0.0.0',port=int(os.environ.get('PORT', 8080)))
+    app.run(debug=True, host='0.0.0.0', port=int(os.environ.get('PORT', 8080)))