flask-hello-world

This is a simple flask application

Overview

Running this app

This app is designed to run in different ways:

1. As a standalone app running on your machine
2. As a Docker container running locally
3. As a Docker image published in Docker Hub
4. As an application hosted by IBM Cloud

1. As a standalone app

1. install python
2. git clone the project then cd into the directory
3. run virtualenv -p /usr/bin/python3 venvor python -m venv venv to create a virtual environment
4. activate it using source venv/bin/activate
5. pip install -r requirements.txt to install the app libraries and it dependencies

running the app

After installing, run the server using python app.py Access the running app in a browser at the URL written to the console (most likely http://localhost:5000)

2. As a Docker container running on your machine

1. install Docker
2. run docker --version to check if docker is installed
3. run docker build -t flask-hello-world:latest . to build the docker image
4. docker images list the local available images
5. run docker run --name flask_hello_world -d -p 8000:5000 --rm flask-hello-world:latest to start the container
6. Navigate to http://localhost:8000 in a browser to see the results. If you want to share it with your local network devices navigate to http://[your-ip-address]:8000

3. As a Docker image published in Docker Hub

Docker Hub is a free service to publicly store available images.

1. you need to install only Docker
2. just run docker run -d -p 8080:5000 --name flask ahmnouira/flask-hello-world

4. As an application hosted by IBM Cloud

Before you begin, verify that you have completed the below steps:

• you have access to an IBM Cloud account.
• the IBM Cloud CLI is installed in your workstation.

1. clone the repository by running git clone https://github.com/AhmNouira/flask-hello-world
2. cd flask-hello-world
3. run bx login to login to your IBM cloud account and enter your email and password
4. bx target --cf to target the Cloud Foundry To check the default organization and space to which you have access, go to https://cloud.ibm.com/account/cloud-foundry.
5. bx cf push to push the application to IBM Cloud
6. if you found any error run bx cf logs flask-hello-world --recent to see the troubleshoot
7. check whether your app is running bx cf app flask-hello-world
8. to explore how your app directories are structured bx cf ssh flask-hello-world

5. Push a new image

Login to the docker.io using the access token

docker login -u ahmnouira docker.io     

Build and tag

docker build -t flask-hello-world:latest .

Tag it as per the docker hub repository name

docker tag flask-hello-world:latest ahmnouira/flask-hello-world:latest

Push the a new image:

docker image push ahmnouira/flask-hello-world:latest