Docker image for Flask application

This is a repository to build a docker image for Flask application. This Docker image includes:

• Installing, setting up and configuring git account inside Docker
• Mounting volume
• Setting language code as UTF-8

Prerequisites

It is assumed that you have

1. Already set up Docker in your local and it functions
2. Your own Flask app

Otherwise, please set up Docker and clone the whole git repository, ignoring file named Dockerfile_w_virtual_env_TBE

User Manual

1. If you you have your own Flask app, copy only the Dockerfile to your work directory
2. Open Dockerfile
   • Change Git a/c information with yours (line 13, 14)
   • Optional: Replace the volume directory path /app that needs to be mounted with yours (line 37)
   • Replace the flask app name hello.py to yours (line 40)
3. If you have your own Flask app, create requirements.txt file by typing pip freeze > requirements.txt in your work directory terminal where you flask app is
4. If you have your own Flask app, go to gitignore.io to create .gitignore file in your work directory

In your work directory terminal:

5. Type docker image build -t image_name . to build the image
6. Use docker images to check if the image is successfully built
7. To create a container, type the command below and modify accordingly the -v tag arguments in the format of host_path:container_path
docker container run -it --name container_name -p 5000:5-000 -v ~/workspace/docker:/app -d image_name

Open your broswer

8. Go to http://127.0.0.1:5000 to see the page. If neccessary, replace 127.0.0.1 with your localhost IP address.

If your container is stopped

1. Type docker start container_name to restart it
2. To execute the container, type docker exec -it container_name bash

Once you are inside the docker container

3. Type flask run --host=0.0.0.0 to run the application

Note: You can type docker ps in your work dorectory terminal to check if the container is successfuly created