Fix pages when access control is true

[uda]

When GITLAB_PAGES_ACCESS_CONTROL is set to true the variable GITLAB_RELATIVE_URL_ROOT added recently is not being replaced causing pages to fail starting

[uda]

Just noting, I verified this by switching to a build in my docker-compose.yml, the variable GITLAB_VERSION is set in .env

services:
  gitlab:
    image: "my.docker.io.proxy/sameersbn/gitlab:${GITLAB_VERSION}"
    build:
      context: ./
      args:
        GITLAB_VERSION: ${GITLAB_VERSION}
    depends_on:

The Dockerfile:

ARG GITLAB_VERSION

FROM my.docker.io.proxy/sameersbn/gitlab:${GITLAB_VERSION}

COPY runtime-functions /etc/docker-gitlab/runtime/functions

Running docker compose build and docker compose up -d now I have the pages system up and running