SpringBoot bootBuildImage with docker-compose build?

Question

Spring Boot recommends using it's Maven/Gradle plugins to build a Docker image (actually, an OCI image which is similar). From https://spring.io/guides/topicals/spring-boot-docker, with Gradle, you run:

gradle bootBuildImage --imageName=myorg/myapp

docker-compose lets you specify a build config with a Dockerfile like this:

  backend:
    image: example/database
    build:
      context: backend
      dockerfile: ../backend.Dockerfile

Is there any way for a docker-compose build to reference the Spring Boot gradle bootBuildImage step instead of a Dockerfile?

I can build a Spring Booth image with gradle bootBuildImage

I can configure a more traditional Dockerfile based image build in docker-compose with build.dockerfile.

Is there any way to specify the Spring Boot image build in a docker-compose configuration?

I am looking to answer this question too. the process that equivalent of "./gradlew bootBuildImage --imageName=imagename" in compose file. — yardımcı Etis
– yardımcı Etis, Commented Dec 27, 2024 at 21:18
I believe a script is required for this: First build Dockerimage using Gradle, then run docker-compose up — Roar S.
– Roar S., Commented Dec 28, 2024 at 9:28
could not get if u still want to use traditional dockerfile or not, anyways check the answer post — buzz8year
– buzz8year, Commented Jan 3 at 12:19

Sai Kalyankar · Accepted Answer · 2025-01-02 21:13:12Z

1

Docker Compose can't directly use bootBuildImage. Instead:

Build the image:

gradle bootBuildImage --imageName=myorg/myapp

Reference it in docker-compose.yml:

services:
  backend:
    image: myorg/myapp

Automate with:

gradle bootBuildImage && docker-compose up

This separates image building from Compose.

Why this approach?

bootBuildImage is a build tool, while docker-compose expects an existing image or a Dockerfile for context. By building the image first, Compose can easily use it.

Additional Notes For more details on bootBuildImage, refer to the Spring Boot Docker Guide.

answered Jan 2 at 21:13

Sai Kalyankar

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Comments

buzz8year · Accepted Answer · 2025-01-03 12:28:29Z

0

You are doing almost right, in docker-compose.yml:

services:
  backend:
    image: myorg/myapp

Just create a script that first builds the image and then starts the Docker Compose services:

#!/bin/bash
gradle bootBuildImage --imageName=myorg/myapp
docker-compose up

Yet, if you still prefer to use traditional Dockerfile & keep everything within Docker Compose, you can use the buildpacks feature directly in your docker-compose.yml:

services:
  backend:
    build:
      context: backend
      dockerfile: ../backend.Dockerfile
      args:
        BUILDPACKS: "gcr.io/buildpacks/builder"

Execute Spring buildpacks when calling docker-compose build command

edited Jan 3 at 12:28

answered Jan 3 at 12:15

buzz8year

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