Adding Dockerfile to React application ⚛️🐬

  • avatar
    Elif Nur Karakoç

In this article, I am explaining how to add a simple Dockerfile to React App. You can create a new React app with create-react-app. I will use my project that I created earlier

Docker can build images automatically by reading the instructions from a Dockerfile.

Dockerfile Example:

FROM node:19-slim
COPY . .
RUN npm install --force
RUN npm install -g live-server
RUN npm run build
CMD ["live-server","build/"]
  • With FROM, the 19-slim version of the node is set as the base image.
  • WORKDIR tells the directory to work with.
  • Everything in the src folder is transferred with COPY.
  • After the necessary dependencies are downloaded with RUN, the build of the application is taken.
  • With EXPOSE, the port that this image uses when it is a container is told.
  • With CMD, the command to run the project is said.

After creating the Dockerfile file, the build command creates the container.

docker build . -t react-app

Let's run the created container with the run command:

docker run -p 9000:8080 react-app
  • It opens out with the 9000 port.

We can access the application at .

Adding Docker Compose

Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application’s services. Then, with a single command, you create and start all the services from your configuration.

docker-compose.yml example:

version: "3.4"
    container_name: react-app
    build: .
      - 9000:8080
  • It may behave differently depending on the versions.
  • Definitions are made for individual images under services.
  • It is called build with the build under react-app and the Dockerfile in the directory it is in.
  • Container_name defines the container name.
  • Multiple ports can be defined with ports. In this definition, it works over 9000, but it takes port 8080 on the docker host.

To run the docker-compose file (gets the build and runs it):

docker-compose up

To get only build:

docker-compose build

To close and delete the container:

docker-compose down

Thank you for reading 💐



Docker Compose

Github Project Link