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DockerでFlutterの環境構築メモ

Last updated at Posted at 2021-12-28

開発環境

Docker Engine 20.10.11
macOS Monterey 12.0.1

Dockerfile と docker-compose.yml と envファイルの作成

Dockerfile

# build時に使用するARGを定義している部分
ARG ubuntu_version
ARG timezone
ARG web_server_port
ARG app_code_path_container

# https://hub.docker.com/_/ubuntu/
FROM ubuntu:${ubuntu_version}

ENV DEBIAN_FRONTEND=noninteractive
ENV LC_ALL=ja_JP.UTF-8
ENV LC_CTYPE=ja_JP.UTF-8
ENV LANGUAGE=ja_JP:jp
ENV TZ $timezone
ENV WEB_SERVER_PORT $web_server_port
ENV APP_CODE_PATH_CONTAINER $app_code_path_container

# Ubuntu base setting (locale と timezone と デバッグによく使用するものを入れる)
RUN apt-get update \
    && apt-get -y -q install \
    # Lang ja
    language-pack-ja-base language-pack-ja apt-transport-https \
    # devtool
    vim netcat vim git curl wget zip unzip make sudo gcc libc-dev clang net-tools \
    xserver-xorg pkg-config libgtk-3-dev cmake ninja-build gnupg software-properties-common \
    && locale-gen ja_JP.UTF-8 \
    && localedef -f UTF-8 -i ja_JP ja_JP.utf8 \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* \
    && echo "${TZ}" > /etc/timezone \
    && rm /etc/localtime \
    && ln -s /usr/share/zoneinfo/Asia/Tokyo /etc/localtime \
    && dpkg-reconfigure -f noninteractive tzdata

# requisites software(Flutter関連で使用するものを入れる)
RUN echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list \
    && wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - \
    && add-apt-repository ppa:maarten-fonville/android-studio
RUN apt-get update && \
    apt-get -y -q install \
    xz-utils libglu1-mesa openjdk-8-jdk google-chrome-stable android-studio \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# AndroidをビルドできるようにAndroidSDKを入れる
WORKDIR /usr/local
RUN mkdir -p Android/sdk
ENV ANDROID_SDK_ROOT /usr/local/Android/sdk
RUN mkdir -p .android && touch .android/repositories.cfg
RUN wget -O sdk-tools.zip https://dl.google.com/android/repository/sdk-tools-linux-4333796.zip
RUN unzip sdk-tools.zip && rm sdk-tools.zip
RUN mv tools Android/sdk/tools
RUN cd Android/sdk/tools/bin && yes | ./sdkmanager --licenses
RUN cd Android/sdk/tools/bin && ./sdkmanager "build-tools;29.0.2" "patcher;v4" "platform-tools" "platforms;android-29" "sources;android-29"
ENV PATH "$PATH:/usr/local/Android/sdk/platform-tools"

# Dartのインストール
RUN sh -c 'curl https://storage.googleapis.com/download.dartlang.org/linux/debian/dart_stable.list > /etc/apt/sources.list.d/dart_stable.list'
RUN apt-get update && \
    apt-get -y -q install \
    dart \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Download Flutter SDK
RUN git clone https://github.com/flutter/flutter.git
ENV PATH "$PATH:/usr/local/flutter/bin"

# Flutter Webが使用できるようにする
RUN flutter config --enable-web
# Flutterの診断
RUN flutter doctor

EXPOSE ${WEB_SERVER_PORT}

docker-compose.yml

docker-compose.yml
version: '3.7'
# 今回のdocker-compose.ymlでは意味ないがlogの設定を別にして使いまわししやすくしている
x-logging:
  &default-logging
  options:
    max-size: '12m'
    max-file: '5'
  driver: json-file

services:
  flutter:
    container_name: flutter
    build:
      context: .
      args:
        # Dockerfile内でARGしている変数に.envに定義した値を代入。
        - ubuntu_version=${UBUNTU_VERSION}
        - timezone=${TIMEZONE}
        - web_server_port=${WEB_SERVER_PORT}
        - app_code_path_container=${APP_CODE_PATH_CONTAINER}
    tty: true
    env_file: .env
    volumes:
      - ${APP_CODE_PATH_HOST}:${APP_CODE_PATH_CONTAINER}${APP_CODE_CONTAINER_FLAG}
    logging: *default-logging
    # web-serverとして動作させるためにportを指定。
    ports:
      - "$WEB_SERVER_PORT:$WEB_SERVER_PORT"

.env

# ここの名前でアプリ名が変わるので自分のアプリ名を設定してください
APP_NAME=YOUR_APP_NAME

APP_CODE_PATH_HOST=./src
APP_CODE_PATH_CONTAINER=/usr/local/workspace
APP_CODE_CONTAINER_FLAG=:cached

TIMEZONE=Asia/Tokyo
UBUNTU_VERSION=20.04
WEB_SERVER_PORT=8888

コマンド

# ビルド
docker-compose build

# コンテナを構築、起動
docker-compose up -d

# 起動したコンテナに入る
docker exec -it flutter bash

# flutterアプリを作成
cd ${APP_CODE_PATH_CONTAINER}
flutter create .

# サーバーを起動
flutter run -d web-server --web-port=${WEB_SERVER_PORT} --web-hostname 0.0.0.0

これでアクセス可能に http://localhost:8888

その他

# Flutterをアップグレードする場合
flutter upgrade

# Webをビルドする場合
flutter build web

設定できているか確認したい時

$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel master, 2.9.0-1.0.pre.207, on Ubuntu 20.04.3 LTS 5.10.76-linuxkit, locale en_US)
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[✓] Chrome - develop for the web
[✓] Android Studio
[✓] Connected device (1 available)
[✓] HTTP Host Availability

• No issues found!

## 参考URL
https://docs.flutter.dev/

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