How can I containerize a Java application using Docker?

How can I containerize a Java application using Docker?

To containerize a Java application, you need to create a Dockerfile that specifies the base image, dependencies, and commands to run your app.

What should I include in the Dockerfile?

You should include the base image (like openjdk), copy your application JAR file, and specify the command to run it.

Can you give me an example of a Dockerfile for a Spring Boot application?

Sure! Here's a simple Dockerfile:

FROM openjdk:11
COPY target/myapp.jar myapp.jar
ENTRYPOINT ["java", "-jar", "myapp.jar"]

This will create a container that runs your Spring Boot app.

How do I build and run the Docker container?

You can build the container using docker build -t myapp . and run it with docker run -p 8080:8080 myapp.