For the latest stable version, please use Spring Boot 3.4.1!

Docker Compose

This section includes topics relating to the Docker Compose support in Spring Boot.

Customizing the JDBC URL

When using JdbcConnectionDetails with Docker Compose, the parameters of the JDBC URL can be customized by applying the org.springframework.boot.jdbc.parameters label to the service. For example:

services:
  postgres:
    image: 'postgres:15.3'
    environment:
      - 'POSTGRES_USER=myuser'
      - 'POSTGRES_PASSWORD=secret'
      - 'POSTGRES_DB=mydb'
    ports:
      - '5432:5432'
    labels:
      org.springframework.boot.jdbc.parameters: 'ssl=true&sslmode=require'

With this Docker Compose file in place, the JDBC URL used is jdbc:postgresql://127.0.0.1:5432/mydb?ssl=true&sslmode=require.

Sharing Services Between Multiple Applications

If you want to share services between multiple applications, create the compose.yaml file in one of the applications and then use the configuration property spring.docker.compose.file in the other applications to reference the compose.yaml file. You should also set spring.docker.compose.lifecycle-management to start-only, as it defaults to start-and-stop and stopping one application would shut down the shared services for the other still running applications as well. Setting it to start-only won’t stop the shared services on application stop, but a caveat is that if you shut down all applications, the services remain running. You can stop the services manually by running docker compose stop on the command line in the directory which contains the compose.yaml file.