How To Build and Deploy a Flask Application Using Docker on Ubuntu

Contents

• Files
• Diagram
• Logging in to VM
• Install Docker Engine
• Upload flask-sample to VM
• Build Docker Image
• List Docker Image
• Create Folders and Add files
• Add VM Port
• Run Docker Image
• Check Docker Container
• Check API from Browser
• Docker Container Log
• Into the Container
• Use Postman to Check API
• Copy a file from Container to VM
• Copy a file from VM to Container
• Stop Container
• Remove Container
• Remove Docker Image
• Contributor
• Blog
• License

Files

No	Folder	Comment
1	Script	Install Docker package using this script
2	flask-sample	Build an web app by using Python and Flask

Diagram

• Flow
• Scenario

Logging in to VM

• On Local

  ssh VM-ACCOUNT@VM-IP
  

Install Docker Engine

• On Local

  Download https://github.com/ArcherHuang/Docker-Python-Flask Repository
  
  cd to Docker-Python-Flask Repository
  
  scp ./Script/install-docker.sh VM-ACCOUNT@VM-IP:~
  

• On VM

  cd ~
  
  chmod 777 install-docker.sh
  
  sudo ./install-docker.sh
  

Upload flask-sample to VM

• On VM

  mkdir ~/flask-sample
  

• On Local

  scp flask-sample/* VM-ACCOUNT@VM-IP:~/flask-sample
  

Build Docker Image

• On VM

  cd ~/flask-sample
  
  sudo docker build -t mmosconii/docker-python:0.1 .
  

List Docker Image

• On VM

  sudo docker images
  

Create Folder

• On VM

  mkdir ~/dataset-out ~/model-out
  
  echo "hello" > ~/dataset-out/1.txt
  
  echo "world" > ~/model-out/2.txt
  

Add VM Port

• On Chrome
  • Login Azure Portal from Browser > Click Networking > Click Add inbound security rule > Click Destination port ranges > Input 80 > Click Add

Run Docker Image

• On VM

  sudo docker run -d -p 80:80 --name=test-dev -v ~/dataset-out:/dataset -v ~/model-out:/model mmosconii/docker-python:0.1
  

Check Docker Container

• On VM

  sudo docker ps -a
  

Check API from Browser

• On Local
  • http://VM-IP

Docker Container Log

• On VM

  sudo docker logs -f test-dev
  

Into the Container

• On VM

  sudo docker exec -it test-dev bash
  

Use Postman to Check API

• GET API
  • GET http://VM-IP
• POST API
  • POST http://VM-IP/store
  • Body

    {
      "run": 6611
    }
    

  
  • Check if the /model/data.json file is exist on Container

Copy a file from Container to VM

• On VM

echo "Lucky seven" > ~/filename.txt

sudo docker ps -a

sudo docker cp CONTAINER-ID:/app/filename.txt ~/777.txt

Copy a file from VM to Container

sudo docker ps -a

sudo docker cp ~/filename.txt CONTAINER-ID:/app/filename.txt 

Stop Container

• On VM

  sudo docker ps -a
  
  sudo docker stop CONTAINER-ID
  

Remove Container

• On VM

  sudo docker ps -a
  
  sudo docker rm CONTAINER-ID
  

Remove Docker Image

• On VM

  sudo docker image prune -a
  

Contributor

• Huang, Cheng-Chuan

Blog

• https://learningsky.io/

License

This sample is licensed under the MIT license.