CS Traveloka 0897-7777-764

Joseph — Thu, 20 Feb 2025 16:24:14 +0000

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😁Getting started with Docker and 🔥Flask

Joseph — Sun, 12 Sep 2021 21:51:40 +0000

Getting Started with Docker and Flask

Introduction

Docker 🎯 and Flask are great combinations for creating web applications and API's.
Let's briefly look into how you, yes you over there an absolute beginner can get started with Docker and Flask.
Without wasting your time let me make you know what Docker and Flask really mean then we dive deeper into how we can create them.
Docker is a platform for building, running and shipping applications

Flask is a Python web micro-framework built with a small core and easy-to-extend philosophy. Flask framework is flexible , lightweight and highly structured

Prerequisites

Programming fundamentals
Basic familiarity with Git 💩( clone, push, pull and e.tc).Just the basics nothing more 🌔

Setting up Your Computer 💻

The getting started guide on Docker has detailed instructions for setting up Docker on Mac, Linux and Windows.
In my case I use windows 10 as my OS .
Once you are done installing Docker, test your Docker installation by running the following:

Open up a terminal window and create a folder for your project:

C:\Users\odhia>mkdir my-intro
C:\Users\odhia>cd my-intro

Then I open it using visual studio code as my editor via the below command

C:\Users\odhia\my-intro>code .

Then inside the editor I created three files(my_app.py, Dockerfile and requirements)

see my repo here Repository
Inside my_app.py we have

from flask import Flask
app = Flask(__name__)
@app.route('/')
def home():
    return 'Flask with docker!'

inside Dockerfile write the below code

FFROM python:3.9-slim-buster
WORKDIR /Users/odhia/my_app
ENV MY_INTRO=my_app.py
ENV FLASK_RUN_HOST=0.0.0.0
ENV FLASK_ENV=development 
COPY requirements.txt requirements.txt
RUN pip install -r requirements.txt
COPY . .
CMD ["flask", "run"]

in requirement.txt type

flask

open your terminal and type
C:\Users\odhia\my-intro> docker image build -t my-intro .
this will take some time , wait till it finishes
Then run the image by typing the below command in your terminal

docker run -d -p 79:5000 my-intro

To show running container, type

docker ps

You will see something like

CONTAINER ID   IMAGE                      COMMAND                  CREATED          STATUS          PORTS                               NAMES
0580c6995b4b   docker101tutorial:latest   "/docker-entrypoint.…"   27 minutes ago   Up 27 minutes   80/tcp                              angry_goodall
13f7ca8a0a5d   docker101tutorial          "/docker-entrypoint.…"   33 minutes ago   Up 33 minutes   0.0.0.0:80->80/tcp, :::80->80/tcp   docker-tutorial

To build the image called "my-intro_webservices"
run the command

docker-compose up -d

then type

docker images

an output like the one below will be seen

REPOSITORY          TAG       IMAGE ID       CREATED             SIZE
<none>              <none>    cea83b5079af   52 minutes ago      125MB
my-intro            latest    4693d6dfab69   52 minutes ago      125MB
docker101tutorial   latest    df160a26968e   About an hour ago   28.3MB
alpine/git          latest    b8f176fa3f0d   3 months ago        25.1MB

The above result are the list of our images

If in any case we wanna do deletion we can use the command

docker rmi df1 -f

NOTE: df1 is first three letters of my image ID

DEV Community: Joseph

CS Traveloka 0897-7777-764

😁Getting started with Docker and 🔥Flask

Introduction

Prerequisites

Setting up Your Computer 💻