docker-multi-stage

Spring Boot + Docker Multistage = Smaller container size

Use can use prebuild version by using:

$ docker run -d -p 8080:8080 saboteurkid/smaller-spring:1.0

Wait for docker to pull and up. Then jump to step #6

1. Clone example project from Spring Boot repository

$ git clone https://github.com/spring-guides/gs-spring-boot.git
$ cd gs-spring-boot/complete

2. Create Dockerfile

wget https://gist.githubusercontent.com/krishofmans/6c7b2ad75ce9250a7603da921a85598e/raw/11094575ec75f7e5f60bbb12c1075999f36ff73a/Dockerfile

3. Build the image

$ docker build -t saboteurkid/smaller-spring:1.0 .

4. Check the images

$ docker images

You will see something like this:

saboteurkid/smaller-spring   1.0                 f880454cde3e        23 minutes ago      99.4MB

5. Create new container that run the newly created image

$ docker run -d -p 8080:8080 saboteurkid/smaller-spring:1.0

6. Test the result

$ curl localhost:8080

You will received: Greetings from Spring Boot!