flask app won't load in browser after executing docker-compose up - docker

Question

I am trying to learn to deploy apps using docker. I have a flask app I am trying to deploy. Each time I run docker-compose up, the output doesn't show any errors but the app won't load in the browser. I make use of flask-sqlalchemy to connect to a mysql database. The contents of my docker-compose file are as follows:
version: "3.7"
services:
db:
image: mysql:5.7
ports:
- "32000:3306"
environment:
MYSQL_HOST: db
MYSQL_USER: root
MYSQL_ROOT_PASSWORD: data_scientist
volumes:
- ./db/route_client.sql:/docker-entrypoint-initdb.d/route_client.sql:ro
app:
build: C:\abdul_files\flask_apps\leaflet\control_search
links:
- db
ports:
- "5001:5000"
depends_on:
- db
The contents of my Dockerfile are as follows:
# Use an official Python runtime as an image
FROM python:2.7.9
# The EXPOSE instruction indicates the ports on which a container
# will listen for connections
# Since Flask apps listen to port 5000 by default, we expose it
EXPOSE 5000
# Sets the working directory for following COPY and CMD instructions
# Notice we haven’t created a directory by this name - this instruction
# creates a directory with this name if it doesn’t exist
WORKDIR /control_search
# Install any needed packages specified in requirements.txt
COPY requirements.txt /control_search
RUN pip install -r requirements.txt
# Run app.py when the container launches
COPY . /control_search
CMD python control_search.py
The contents of my config file where I have my sqlalchemy database uri are as follows:
import os
class Config(object):
SQLALCHEMY_DATABASE_URI = 'mysql://root:data_scientist#db/route_client'
SECRET_KEY = os.urandom(32)
SESSION_TYPE = 'filesystem'
As I said earlier, the docker-compose up command executes without errors but the app won't load in the browser. Any pointers to what I am doing wrong will be greatly appreciated.