Uploading compiled .tex file (.pdf) to the root repo in Gitlab

I need your help with the following problem. I'm trying to compile a .tex document in GitLab and put my compiled .pdf file in the root repo. I have created a .gitlab-ci.yml file which has the following configuration:

# Use the latest version of the TeX Live Docker image
image: texlive/texlive:latest

# Define a single stage named "build"
stages:
  - build

# Configuration for the "build" stage
build:
  stage: build
  # Specify the events that trigger the pipeline
  only:
    - push
  # Specify the commands to be executed in the pipeline
  script:
    - filename="main"
    - echo "Running latexmk with lualatex"
    - latexmk -pdf -pdflatex="lualatex %O %S" "$filename.tex"
    - echo "Moving .pdf file to root directory"
    - mv "$filename.pdf" ../
    - echo "Listing contents of root directory"
    - ls ../

The log file tells me the following

Latexmk: All targets () are up-to-date
$ echo "Moving .pdf file to root directory"
Moving .pdf file to root directory
$ mv "$filename.pdf" ../
$ echo "Listing contents of root directory"
Listing contents of root directory
$ ls ../
PhD
PhD.tmp
main.pdf
Cleaning up project directory and file based variables
Job succeeded

However, when I access my repo, I do not find any main.pdf file loaded. How can I solve this problem? Is there something I don't understand?