AIT SAD 2022

# Lab 6: Docker Compose

Hiiiiiii guys, This lab we would learn what is Docker Compose and why do we need to use it. Basically, Docker compose (opens new window) is a configuation file for container. It helps you manage more than one containers. Even though, you have only one container, Docker compose would be still useful.

# Why is Docker-compose useful?

  • Basically, Docker-compose has 2 mains command.

# docker-compose up

  • docker-compose up does a lot of steps for you in single command.
    1. docker build
    2. docker run
    3. create local private network
    4. join all container(s) into that local private network
    5. set Hostname for each container

Example output

 


















 
 
 
 

[+] Building 2.2s (12/12) FINISHED
 => [internal] load build definition from Dockerfile                                                                                                                                     0.0s
 => => transferring dockerfile: 32B                                                                                                                                                      0.0s
 => [internal] load .dockerignore                                                                                                                                                        0.0s
 => => transferring context: 2B                                                                                                                                                          0.0s
 => [internal] load metadata for docker.io/library/python:3.9.7-buster                                                                                                                   1.9s
 => [1/7] FROM docker.io/library/python:3.9.7-buster@sha256:2ea1c4a9d762bb318f11cc6c7d9ce3fc71b928f5c70bbbcb02ece7c859a9b972                                                             0.0s
 => [internal] load build context                                                                                                                                                        0.0s
 => => transferring context: 542B                                                                                                                                                        0.0s
 => CACHED [2/7] WORKDIR /home/src                                                                                                                                                       0.0s
 => CACHED [3/7] RUN pip install "fastapi==0.70.0"                                                                                                                                       0.0s
 => CACHED [4/7] RUN pip install uvicorn[standard]                                                                                                                                       0.0s
 => CACHED [5/7] RUN pip install "pymongo==3.12.0"                                                                                                                                       0.0s
 => CACHED [6/7] RUN pip install "mypy==0.910"                                                                                                                                           0.0s
 => [7/7] COPY ./src /home/src/                                                                                                                                                          0.1s
 => exporting to image                                                                                                                                                                   0.1s
 => => exporting layers                                                                                                                                                                  0.0s
 => => writing image sha256:90812bc9df6d29e4cf901e0b8150ea476daa30950cf2a7346542c8e5761939fe                                                                                             0.0s
 => => naming to docker.io/library/006-counter_api                                                                                                                                       0.0s
[+] Running 3/3
 - Network 006-counter_default    Created                                                                                                                                                0.0s
 - Container 006-counter_mongo_1  Started                                                                                                                                                0.9s
 - Container 006-counter_api_1    Started
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# docker-compose down

  • docker-compose down sames as docker-compose up
    1. docker stop
    2. docker rm
    3. remove network

Example output

[+] Running 3/3
 - Container 006-counter_mongo_1  Removed                                                                                                                                                1.8s
 - Container 006-counter_api_1    Removed                                                                                                                                               11.3s
 - Network 006-counter_default    Removed
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# Workshop

# Counter

# Homework

  1. Create your own Counter web application container using Django (You can choose other framework except FastAPI 😄 ).
    • You can use any database(s).
    • You can decide how many view(s) do you want to use.
  2. Create a simple README.md to show your commands how to create and run your Image/Container.
  3. Push your complete project to your GitHub.
  4. Snapshot your WebApp and your Github link (link of your HW) and submit in PDF format to the Google Classroom.