What does "installr" error mean in Reactjs with Docker using yarn?

  docker, javascript, reactjs, windows, yarnpkg

I created a Reactjs application with Docker setup. I am using Windows 10. After building, the container just keeps restarting producing errors on logs:

Docker Image

Logs Image

Browser Image

yarn run v1.22.5
error Command "installr" not found.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
: not foundotup.sh: line 3: 
/var/www/bootup.sh: line 11: syntax error: unexpected end of file (expecting "then")

Dockerfile

# pull official base image
FROM node:12.20.0-alpine3.10

WORKDIR /var/www

COPY package.json /var/www/
RUN yarn install

COPY . /var/www/

# Install create-react-app package
RUN yarn global add react-scripts

EXPOSE 3000

ADD ./bootup.sh /var/www
RUN cd /var/www
RUN chmod +x /var/www/bootup.sh

docker-compose.yml

version: '3.7'
services:
  frontend:
    build: .
    restart: unless-stopped
    tty: true
    working_dir: /var/www/
    ports:
      - '3002:3000'
    volumes:
      - '.:/var/www'
      - /var/www/node_modules
    environment:
      - CHOKIDAR_USEPOLLING=true yarn start
    command: /var/www/bootup.sh ${SSL_ON}

bootup.sh

# Install Dependencies
yarn install

# Start the react app
if [ "$1" == "true" ]
then
  yarn start-https
else
  yarn start
fi

I tried restarting it, killing the container, cloned the repository again, but the issue is still occurring.

I cloned the repo in Ubuntu using another laptop, none of these errors occur, only on windows. If anyone has any idea what this means, it would be a great help.

Source: Docker Questions

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