Flask App working locally but not working on local docker - python-3.x

Question

The app is running locally but when i build docker image and try to run the app from local docker then the browser shows the following error:
This site can’t be reached http://172.17.0.2:8080/ is unreachable.
ERR_ADDRESS_UNREACHABLE and also taking too long to respond
what changes should i make in docker file or in the app code so that i can run it form local docker
Flask App code:
from flask import Flask,request, url_for, redirect, render_template, jsonify
from pycaret.regression import *
import pandas as pd
import pickle
import numpy as np
app = Flask(__name__)
model = load_model('deployment_28042020')
cols = ['age', 'sex', 'bmi', 'children', 'smoker', 'region']
#app.route('/')
def home():
return render_template("home.html")
#app.route('/predict',methods=['POST'])
def predict():
int_features = [x for x in request.form.values()]
final = np.array(int_features)
data_unseen = pd.DataFrame([final], columns = cols)
prediction = predict_model(model, data=data_unseen, round = 0)
prediction = int(prediction.Label[0])
return render_template('home.html',pred='Expected Bill will be{}'.format(prediction))
if __name__ == '__main__':
app.run(debug=True, port=8080, host='0.0.0.0')
Docker file:
FROM python:3.7
RUN pip install virtualenv
ENV VIRTUAL_ENV=/venv
RUN virtualenv venv -p python3
ENV PATH="VIRTUAL_ENV/bin:$PATH"
WORKDIR /app
COPY requirements.txt requirements.txt
ADD . /app
# install dependencies
RUN pip install -r requirements.txt
COPY . .
# expose port
# EXPOSE 5000
# EXPOSE 8000
EXPOSE 8080
# run application
CMD ["python", "app.py", "--host=0.0.0.0"]

Answer 1

Add a docker-compose.yml file
version: "3"
services:
app:
build: .
ports:
- "8080:8080"
Run: docker-compose up --build
An important thing to notice is that 172.17.0.2 belongs to your container network. You can access your site on
http://localhost:8080.