livelessons-cloud-docker

Lesson 3: Reaching For The Clouds (Docker)

Introduction

This example shows how you can package a Spring Boot application into a Docker image.

Prerequisites

You need have an installed and running Docker setup. If you are using OSX you should use Boot2Docker.

Building from the command line

A Dockerfile is included with this project to allow you to build an image from the command line. You can use the following commands:

$ mvn clean package
$ docker build -t livelessons-cloud-docker .

Building using Maven

This project also includes a Maven example which uses the docker-maven-plugin from Spotify. To build using mave you need to enable the docker profile:

$ mvn clean package -Pdocker

Starting the container

You need to remember to start the Docker container with correct port mappings. The following command should be used:

$ docker run -d -p 8080:8080 --name livelessons-cloud-docker livelessons-cloud-docker

To test the application is running you can issue one of the following commands (you only need to use the boot2docker variant on OSX.

$ curl http://$(boot2docker ip 2>/dev/null):8080
$ curl http://localhost:8080