Using variables from runner host

GitLab CI/CD
1

Hello,

I am using own runner with a docker executor. I am using the following example .gitlab-ci.yml:

image: docker:20.10.16

variables:
 
  DOCKER_TLS_CERTDIR: "/certs"
  DB_HOST: host10.com
  DB_PORT: 3306
  DB_NAME: db1
  DB_USER: user1
  DB_PASSWORD: somepassword

services:
  - docker:20.10.16-dind

before_script:
  - docker info

build:
  stage: build
  tags: 
    - master
  script:
    - docker build -t my-docker-image .
    - docker run -p "80:8080"  my-docker-image

How can I pass the variables above to the container from the runner host itself? I’ve tried adding them to /etc/gitlab-runner/config.toml like this:

[[runners]]
  name = "Runner 1.."
   .......
  [runners.docker]
    tls_verify = false
    image = "docker:stable"
............
    shm_size = 0
    environment = ["DOCKER_TLS_CERTDIR=/certs", "DB_HOST=host10.com", "DB_PORT=3306", "DB_NAME=db1", "DB_USER=user1", "DB_PASSWORD=somepassword"]

But it does not seem to work, the application running inside docker executor does not see them. Am I doing something wrong? I want that they are taken somehow from the runner host itself, instead of letting passwords and other info into .gitlab-ci.yml. Any suggestions please?

Ps: I am using docker version 23.0.1 and gitlab runner 15.9.1 on Ubuntu 22.04.

Thank you,

Dragos