【Docker】Python実行環境をコンテナ上に作成する方法

- docker-compose.yml
|
- pyenv
    - dockerfile
    |
    - requirements.txt
    |
    - main.py

version: "3"

services:
  python:
    image: python
    build:
      context: ./pyenv
    container_name: python-env
    tty: true
    volumes:
      - .:/workspace:cached
    working_dir: /workspace
    ports:
      - 8888:8888

# ベースイメージを指定
FROM python:3.10

# 標準モジュールのインストール
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    build-essential \
    git \
    fish 

# pip アップグレード
RUN pip install --upgrade pip

# Pythonライブラリのインストール
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# FISH実装
SHELL [ "/usr/bin/fish", "-c" ]
RUN curl https://git.io/fisher --create-dirs -sLo ~/.config/fish/functions/fisher.fish
RUN fisher install oh-my-fish/theme-coffeeandcode

matplotlib>=3.4.3
seaborn>=0.11.2

import matplotlib.pyplot as plt

# データ
x = [1,2,3,4]
y = [10,15,20,25]

# グラフ可視化
plt.plot(x, y)
plt.show()

# グラフ画像保存
plt.savefig('graph.png')

# メッセージ
print("Complete!")

docker-compose up -d

(base)  ❯❯❯ docker-compose up -d

Building python
[+] Building 35.6s (13/13) FINISHED                                                                                  
 => [internal] load build definition from Dockerfile                                                            
 => => transferring dockerfile: 999B                                                                            
 => [internal] load .dockerignore                                                                               
 => => transferring context: 2B                                                                                 
 => [internal] load metadata for docker.io/library/python:3.10                                                  
 => [auth] library/python:pull token for registry-1.docker.io                                                   
 => [internal] load build context                                                                               
 => => transferring context: 458B                                                                               
 => [1/7] FROM docker.io/library/python:3.10@sha256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 => CACHED [2/7] RUN apt-get update &&     apt-get install -y --no-install-recommends     build-essential       
 => CACHED [3/7] RUN pip install --upgrade pip                                                                  
 => [4/7] COPY requirements.txt .                                                                               
 => [5/7] RUN pip install --no-cache-dir -r requirements.txt                                                   
 => [6/7] RUN curl https://git.io/fisher --create-dirs -sLo ~/.config/fish/functions/fisher.fish                
 => [7/7] RUN fisher install oh-my-fish/theme-coffeeandcode                                                      
 => exporting to image                                                                                          
 => => exporting layers                                                                                         
 => => writing image sha256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx                    
 => => naming to docker.io/library/python                                                                       

Use 'docker scan' to run Snyk tests against images to find vulnerabilities and learn how to fix them

Creating python-env ... done

docker exec -it python-env fish

Welcome to fish, the friendly interactive shell
Type help for instructions on how to use fish
root@xxxx /workspace
$

 python pyenv/main.py