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

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