Spring Boot & Docker with debug and Spring profiles
Spring Boot and Docker are extremely popular. The Spring Boot adoption now hits 34% according to this survey: http://www.baeldung.com/java-8-spring-4-and-spring-boot-adoption. Docker adoption has more than doubled from 13% to 27% in 2016 according to a RightScale survey.
Spring Boot helps application development process while Docker contributes to streamline deployment.
The spring-boot-docker image will help you run your Spring Boot applications with Docker, either in development or production stage.
Features of spring-boot-docker image
Although there are many images for this purpose, this one provides two useful features:
Easily debug your application
Simply set the variable
DEBUG to true in
docker-compose.yml file and the application will start in debug mode:
environment: - "DEBUG=true"
Run your application with desired Spring profile
Spring profiles are a useful way to separate applications resources between different stages. To specify a Spring profile your application should run with, simply set the
SPRING_PROFILES_ACTIVE variable in
environment: - "SPRING_PROFILES_ACTIVE=dev"
To run the application within the Docker container, simply place your executable jar into the
assets directory, renamed as follows:
Then launch the container:
docker-compose up -d
More instructions are available here: https://github.com/f-lopes/spring-boot-docker