What does "install\r" error mean in Reactjs with Docker using yarn?

Question

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 "install\r" 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.

Answer 1

I resolved this issue based on @HansKilian comment about line-endings. I followed this link on how to convert bootup.sh file with the proper UNIX-style line endings: https://support.nesi.org.nz/hc/en-gb/articles/218032857-Converting-from-Windows-style-to-UNIX-style-line-endings