Terraform and Docker with GitLab and Jenkins instances

bash.sh

# Bind Docker socket to port
socat -d TCP-LISTEN:2376,range=127.0.0.1/32,reuseaddr,fork UNIX:/var/run/docker.sock

main.tf

provider "docker" {
  host = "tcp://127.0.0.1:2376/"
}

resource "docker_network" "ci_network" {
  name = "CI Network"
}

resource "docker_container" "gitlab" {
  image = "${docker_image.gitlab.latest}"
  name  = "Gitlab"
  network_mode = "bridge"
  networks = [ "${docker_network.ci_network.name}" ]
  hostname = "gitlab"
  ports = {
  	internal = 80
  	external = 8080
  }
}

resource "docker_container" "jenkins_master" {
  image = "${docker_image.jenkins_master.latest}"
  name  = "JenkinsMaster"
  network_mode = "bridge"
  networks = [ "${docker_network.ci_network.name}" ]
  hostname = "jenkins-master"
  ports = {
  	internal = 80
  	external = 9000
  }
}

resource "docker_container" "jenkins_slave" {
  count = 2
  image = "${docker_image.jenkins_slave.latest}"
  name  = "JenkinsSlave${count.index + 1}"
  network_mode = "bridge"
  networks = [ "${docker_network.ci_network.name}" ]
  hostname = "jenkins-slave"
  ports = {
  	internal = 80
  	external = "${9001 + count.index}"
  }
}

resource "docker_image" "gitlab" {
  name = "gitlab/gitlab-ce:latest"
}

resource "docker_image" "jenkins_master" {
  name = "jenkins:latest"
}

resource "docker_image" "jenkins_slave" {
  name = "publicisworldwide/jenkins-slave:latest"
}