Building Flutter-web project in docker container but without Flutter SDK

docker-create.sh

#!/bin/bash

docker pull cirrusci/flutter:latest-web
docker image build -t flutter_frontend:latest .
docker create -ti --name dummy flutter_frontend:latest bash
docker cp dummy:/usr/local/flutter_frontend/build ./build
docker rm -f dummy

# (Option) To move the output to somewhere else
mkdir ${HOME}/output
cp -r ./build/web/* ${HOME}/output
chown -R ${USER}:${USER} ${HOME}/output/*

Dockerfile

FROM cirrusci/flutter:latest-web AS build

COPY . /usr/local/flutter_frontend
WORKDIR /usr/local/flutter_frontend
RUN sudo chown -R cirrus:cirrus ./*
RUN sudo chown -R cirrus:cirrus ./.*
RUN sudo rm -f .packages
RUN flutter config --enable-web
RUN flutter pub get
RUN flutter build web

0. These have been used in Debian based OSes.
1. Install docker and add your account to docker group.
2. Place those files in a flutter project root (next to pubspec.yml).
3. Run the shell script.

If flutter web output file should be used in a docker-compose based system,
Please consider multi-stage of compose syntax.