#Docker image + Docker Compose file for Spring Boot applications

Features:

• Debug mode
• Spring profiles

https://hub.docker.com/r/flopes/spring-boot-docker/

How to use ?

Copy your Spring Boot executable jar

By default, this image will pick an executable jar named spring-boot-application.jar under the assets directory.

Put your application jar into the assets folder and rename it as follows: spring-boot-application.jar.

Start container

docker compose up -d

You should now have your application running on port 8080 (default port configuration).

You can consult application logs by running this command: docker-compose logs

Stop your application and remove container:

docker-compose stop && docker-compose rm -f

Custom application name

To have the image use your application jar name, update Dockerfile as follows: ENV APP_JAR ${your_app_name.jar}

Stop and remove container if it's started: docker-compose stop && docker-compose rm -f

Rebuild the image and launch it: docker-compose build && docker-compose up -d

Bind database in annother container:

db:
  image: mysql

Custom ports

To change host ports, update the lines after ports: in docker-compose.yml file:

ports:
   - "8080:8080"
   - "8000:8000"

For example, if you want to expose Spring Boot port (8080 by default) on the 80 (host):

ports:
   - "80:8080"
   - "8000:8000"

If your Spring Boot application is configured to run on port 8081, update the configuration as follows:

ports:
   - "80:8081"
   - "8000:8000"

Debug mode

To run the application in debug mode, simply set the DEBUG environment variable to true in the docker-compose.yml file.

Launch the application: docker-compose up -d

By default, the debug port used is the 8000.

Spring profile(s)

By default, the application will run with dev Spring profile

To run the application with a specific Spring profile, set the desired one in the docker-compose.yml file:

environment:
   - "SPRING_PROFILES_ACTIVE=dev"