Make host configurable

.gitignore

 .idea
+venv

app.py

 from flask import Flask, render_template, request, redirect, send_file
 from elasticsearch_dsl import connections, Search
+import os 
 
 app = Flask(__name__)
 
-connections.create_connection(hosts=['34.121.207.248:9200'], timeout=20)
+connections.create_connection(hosts=[os.getenv('ES_HOST', 'localhost')], timeout=20)
 
 
 @app.route('/search')
@@ -43,4 +44,4 @@ def index():
 
 if __name__ == '__main__':
     app.debug = True
-    app.run(host="0.0.0.0")
+    app.run(host="0.0.0.0", port=5000)