Resolving "react exit with code 0" when running a React container

I guess before running into this error on your Docker instance I presume you have basic knowledge of Docker and as such won't need to explain or give basic explanation about Docker and rather go straight to the solution of the aforementioned problem.

The Error

The error is met when you run the below command on a set of project(s) that include a React App.

docker-composer up

or try to start a React App container from an image on your Docker instance.

For the simplest solution, Skip to Option 5 😉

Option 1

(While Running Multiple Containers)

Add the configuration "tty:true" to your react instance

    react:
            tty: true //NOTE
            build: dockerreact
            ports: - "3000:3000"

Option 2

(While Running Multiple Containers)

Setting "stdin_open:true" to your react instance

    react:
            stdin_open: true //NOTE:
            build: dockerreact
            ports: - "3000:3000"

Option 3

(While Running Multiple Containers or Single React Container)

Add "CI=true" as a command that should be executed before "npm install" in your Dockerfile within your React project root directory

FROM node:14.5

RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app

COPY package.json /usr/src/app

RUN CI=true //NOTE

RUN npm install
COPY . /usr/src/app

EXPOSE 3000
CMD ["npm","start"]

Option 4

(While Running Multiple Containers or Single React Container)

Use "docker-compose run" instead of "docker-compose up" as this automatically sets either option 1 or 2 as true

docker-compose run

NOTE: This is only works on already built docker images

Option 5

(While Running Multiple Containers or Single React Container)

Lastly, Downgrade your "react scripts" version to 3.4.0

NOTE: Downgrading to 3.3.0 or lower wont solve this error and might bring up other issues on your react project

"dependencies": {
        "@testing-library/jest-dom": "^4.2.4",
        "@testing-library/react": "^9.3.2",
        "@testing-library/user-event": "^7.1.2",
        "react": "^16.13.1",
        "react-dom": "^16.13.1",
        "react-scripts": "3.4.0,  //NOTE:
        "react-scripts": "3.4.1" //NOT WORKING
},