Deploying a Spring Boot application in Docker is a great way to package your application and its dependencies into a container that can be deployed to any environment. Here’s a brief overview of the steps involved:
Create a Dockerfile — A Dockerfile is a script that defines the instructions for building a Docker image. In this file, you’ll need to specify the base image, copy your application code into the image, and set up any necessary configuration.
Build the Docker image — Once you’ve created your Dockerfile, you can use the “docker build” command to build the Docker image. This command will execute the instructions in your Dockerfile and create a new image that contains your application code and dependencies.
Run the Docker container — After you’ve built your Docker image, you can use the “docker run” command to start a new Docker container. This will spin up a new container from your image and start your Spring Boot application.
Expose the container port — By default, Docker containers are isolated from the host network. To allow external access to your Spring Boot application, you’ll need to use the “docker run” command with the “-p” flag to map the container port to a port on the host machine.
Push the Docker image to a registry — Finally, you may want to push your Docker image to a Docker registry like Docker Hub or Amazon ECR. This will allow you to easily share your image with others and deploy it to different environments.