docker-gitlab-spring-boot-boilerplate

Assumed that readers have preliminary knowledge of docker, docker-compose, gitlab, CI/CD and network.

Network along with docker is very important.
Should know how docker network works.
It uses many container images from docker hub to achieve the goal that spring boot app can be deployed in docker container and be secured.
Maybe a lot of things were skipped such as port-forwarding, setting ssh, etc..

Steps

First, install docker and docker-compose on your server

Skipped.

Second, put docker-compose.yml from this repository on your preferred location.

I used ~/docker-compose as the location.
cd ~
mkdir docker-compose
cd docker-compose
vim docker-compose.yml

Third, create docker network for `explicitly` internal usage.

docker network create nginx-net

4th, Start docker containers along with predefined docker-compose.yml

docker-compose up -d
Or using zsh with docker-compose plugin, dco up -d

5th, Set up docker registry embedded in gitlab-ce container.

Maybe already settled in docker-compose.yml

6th, register gitlab-runner for gitlab-CI

docker exec -it gitlab-runner bash
Execute gitlab-runner register and complete following prompts.
Press Ctrl + p + q in order to exit from container shell safely.

7th, Develop spring-boot app and set up gitlab-CI

Put Dockerfile and .gitlab-ci.yml on the root directory of spring boot project.

Finally, gitlab-CI may be triggered on push to the repository.