Gitlab CICD ➫ Build docker images using Buildpacks

Gitlab CICD ➫ Build docker images using Buildpacks

Having worked mostly with Bamboo, setting up Gitlab CI/CD is slightly more complex. But it’s just a one-time configuration and I am in love with it already.

I came up with a POC idea for building the docker images using buildpacks, with the runner based within the docker runtime.

This post will cover the following parts :-

➫ Setting up Gitlab runner(s) & executor(s).
➫ Creating a custom docker image for executor.
➫ Setting up project & pipeline.

Prerequisites :-

➫ Gitlab account, free one should be just perfect!
➫ A VM or a local machine with Docker installed. It is better if we have a unix/ linux system.
⚠️ Runners based on Window’s docker may require extra config/ steps.⚠️
➫ Hands on with git, docker, java, etc.

➬ Setting up a group runner

docker-compose.yml below:-

services:
  gitlab-runner:
    image: gitlab/gitlab-runner
    container_name: gitlab-runner…