1 この記事は
Vue-Cli(描写系)-python(演算系)-mysql(データ保存)で構成されるシステムをdockerコンテナを使って構築する。この記事で環境構築のみの方法を説明する。
アプリ作成編は、下記リンク先をご確認ください
2 制作アプリの紹介
上記のシステムを動かすために、入力した数値に+3を加算し、演算結果を表示するアプリを作成してみました。
入力した数値に+3を加算し表示するとき
+3を加算する演算を実施した時刻を読みだすとき
3 システムの構築手順
3-1 前提条件
・Windows11
・Docker desktop for windowsがインストールされていること
3-2 ディレクトリを構成する。
下記のとおり、ディレクトリ、ファイルを配置する。(この地点では、ファイルの中は空でＯＫです)
3-3 docker-compose.ymlを作成する
MEGARA_SEL/fe/docker-compose.yml
version: "3"
services:
# フロントエンド
fe:
container_name: fe
build: ./fe
volumes:
- ./fe/app:/app
- node_modules_volume:/app/node_modules
ports:
- "8080:8080"
links:
- be
command: tail -f /dev/null #コンテナ起動状態を維持するため
# バックエンド
be:
container_name: be
build: ./be
volumes:
- ./be/app:/app
ports:
- "5000:5000"
command: tail -f /dev/null #コンテナ起動状態を維持するため
links:
- db
# データベース
db:
container_name: mysql_host0
build: ./db
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_DATABASE: test_db
MYSQL_USER: docker
MYSQL_PASSWORD: docker
TZ: 'Asia/Tokyo'
command: mysqld --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci
volumes:
- ./docker/db/data:/var/lib/mysql
- ./docker/db/my.cnf:/etc/mysql/conf.d/my.cnf
- ./docker/db/sql:/docker-entrypoint-initdb.d
ports:
- 3306:3306
volumes:
node_modules_volume:
3-4 Dockerfileを作成する
beに配置するDockerfile
MEGARA_SEL/be/Dockerfile
FROM ubuntu:20.04
FROM python:3.9.2-buster
RUN apt-get update
RUN apt-get install lsof
RUN apt-get install emacs
# 必要パッケージのインストール
RUN apt install -y nodejs npm
RUN npm install python-shell
RUN npm install express
RUN npm install mysql
RUN mkdir /app
ADD requirements.txt /app
ENV PYTHONUNBUFFERED 1
EXPOSE 5000
WORKDIR /app
RUN pip3 install -r requirements.txt
feに配置するDockerfile
MEGARA_SEL/fe/Dockerfile
# ベースイメージ
FROM node:16-alpine3.15
# Create app directory
WORKDIR /app
# Install app dependencies (package.json and package-lock.json)
COPY package*.json ./
RUN apk update
RUN apk add lsof
RUN npm install
RUN npm install axios
RUN npm install -g npm
RUN npm install -g @vue/cli@3.9.3
RUN npm install -g @vue/cli-init
RUN vue init webpack .
# Bundle app source (server.js)
COPY . .
# Listen port
EXPOSE 8080
dbに配置するDockerfile
MEGARA_SEL/db/Dockerfile
# apt-get出来る様にdebian版を使う。
FROM mysql:8.0.30-debian
# コンテナ内で日本語が打てるようにlocalを変更といらないファイル削除
RUN apt-get update \
&& apt-get install -y locales \
&& sed -i -E 's/# (ja_JP.UTF-8)/\1/' /etc/locale.gen \
&& locale-gen \
&& update-locale LANG=ja_JP.UTF-8 \
&& apt-get clean \
&& rm -rf /var/lib/apt/lists/*
ENV LC_ALL ja_JP.UTF-8
3-5 環境構築時、同時にインストールするパッケージを記載したファイルを作成する
MEGARA_SEL/be/requirements.txt
SQLAlchemy
Flask-SQLAlchemy
Flask-Cors
marshmallow
marshmallow-sqlalchemy
flask-marshmallow
pymysql
MEGARA_SEL/db/my.cnf
[mysqld]
character-set-server=utf8mb4
collation-server=utf8mb4_unicode_ci
[client]
default-character-set=utf8mb4
MEGARA_SEL/fe/package.json and MEIGARA_SEL/be/app/package.json
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"requires": true,
"lockfileVersion": 1,
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3-6 Docker-composeの起動 & コンテナの正常起動確認
(1) Docker Desktop for Windows を起動させる。(これを忘れるとDockerFileが動作しません)
(2) VS Codeを起動し、MEIGARA_SELディレクトリ(rootディレクトリに移動する)に移動する。VS Codeの下欄にTERMINALがあるのでこちらにコマンドを入力すると便利です。
MEGARA_SEL
docker-compose build
(3)コンテナを生成、正常起動することを確認する。
MEGARA_SEL
docker-compose up
Docker desktop for windowsを見ると下記のように３つコンテナが作成されている。
それぞれのコンテナについて矢印をクリックし、正常起動することを確認する。
VS CodeのTERMINALにて下記のコマンドでコンテナに入っても良い
MEGARA_SEL
docker exec -it (コンテナ名) /bin/bash
3-7 frontend(Vue-cli)を起動させる。
Vue-Cliインストール完了後、MIGARA_SEL/fe/app/confog/index.jsのhostを下記のように書き換える。
コンテナfeの中に入り下記コマンドを起動させる。
app
/app # npm run dev &
DONE Compiled successfully in 2429ms 2:12:02 AM
I Your application is running here: http://0.0.0.0:8080
localhost:8080にアクセスし、下記の画面が表示されればフロントエンド(Vue-Cli)は正しくインストールできています。
3-8 mysqlを起動させる。
コンテナを起動させ、コンソールを表示させる。
mysqlサーバーに接続する。
mysql
sh-4.2# mysql -h 127.0.0.1 -u root -p #mysqlサーバーに接続する。
mysql> CREATE DATABASE test_db; #database 「test_db」を作る。
Query OK, 1 row affected (0.00 sec)
mysql> show databases; #存在するdatabaseを表示する。
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test_database |
| test_db |
+--------------------+
6 rows in set (0.01 sec)
mysql> drop database test_db; #database 「test_db」を削除する。
mysql> show databases; #存在するdatabaseを表示する。
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test_database |
+--------------------+
5 rows in set (0.01 sec)
mysql> CREATE DATABASE test_db; #database 「test_db」を作成する。
Query OK, 1 row affected (0.00 sec)
mysql> SHOW TABLES from test_db; #database 「test_db」に存在するtableを表示する。
+-------------------+
| Tables_in_test_db |
+-------------------+
| test_table |
+-------------------+
1 row in set (0.00 sec)
mysql> SELECT * FROM test_db.test_table; #database 「test_db」に存在するtable「test_table」の内容を表示する。
+------------+-------+
| hiduke | value |
+------------+-------+
| 2001-03-12 | 3 |
| 2000-04-05 | 6 |
| 2001-03-27 | 9 |
+------------+-------+
3 rows in set (0.00 sec)