Merge branch 'simpler-run' into 'master'

Change the way the Flask app is launched

See merge request PSPA/pspa-cgi-poc!5

README.md

@@ -45,12 +45,7 @@ python3.exe setup.py build_ext --inplace && rm -f pyelements.c && rm -Rf build
 
 # serve back-end at localhost:5000
 cd ..
-# Unix platforms:
-FLASK_APP=pspa.py FLASK_DEBUG=1 flask run
-# Windows:
-set FLASK_APP=pspa.py
-set FLASK_DEBUG=1
-flask run
+python pspa.py
 ```
 
 ## Using with Docker
@@ -79,7 +74,7 @@ Then launch flask
 
 ```bash
 cd /app
-FLASK_APP=pspa.py FLASK_DEBUG=1 flask run --host 0.0.0.0
+python pspa.py
 ```
 
 Do not forget the `host` as docker is very picky about it ;-) If all goes right, you should see:

pspa.py

+#!/usr/bin/env python
+
 from flask import Flask, render_template, jsonify
 from flask_cors import CORS
 import requests
@@ -70,3 +72,7 @@ def catch_all(path):
     if app.debug:
         return requests.get('http://localhost:8080/{}'.format(path)).text
     return render_template("index.html")
+
+
+if __name__ == "__main__":
+    app.run("0.0.0.0", port=5000, debug=True)