SSL certificates or other files not showing in Docker file structure

Question

I have a Docker build for Gitlab, I created some ssl certificates and other files I need to pull in. However when I exec into the container bash the files are not visible.

gitlab:
  image: 'gitlab/gitlab-ce:9.1.0-ce.0'
  restart: always
  hostname: 'gitlab.example.com'
  links:
    - postgresql:postgresql
    - redis:redis
  environment:
    GITLAB_OMNIBUS_CONFIG: |
      postgresql['enable'] = false
      gitlab_rails['db_username'] = "gitlab"
      gitlab_rails['db_password'] = "gitlab"
      gitlab_rails['db_host'] = "postgresql"
      gitlab_rails['db_port'] = "5432"
      gitlab_rails['db_database'] = "gitlabhq_production"
      gitlab_rails['db_adapter'] = 'postgresql'
      gitlab_rails['db_encoding'] = 'utf8'
      redis['enable'] = false
      gitlab_rails['redis_host'] = 'redis'
      gitlab_rails['redis_port'] = '6379'
      external_url 'https://gitlab.example.com:30080'
      nginx['ssl_certificate'] = '/etc/gitlab/trusted-certs/gitlab.example.com.crt'
      nginx['ssl_certificate_key'] = '/etc/gitlab/trusted-certs/gitlab.example.com.key'
  ports:
    - "30080:30080"
    - "30022:22"
postgresql:
  restart: always
  image: postgres:9.6.2-alpine
  environment:
    - POSTGRES_USER=gitlab
    - POSTGRES_PASSWORD=gitlab
    - POSTGRES_DB=gitlabhq_production
redis:
  restart: always
  image: redis:3.0.7-alpine

Answer 1

On creation of the self signed certificates, I need to exec into my docker container and create them using the docker bash