After username change, pipeline unable to pull registry image (unauthorized HTTP Basic: Access denied)
### Summary
Hey, after changing username **Lexinek** -> **JanMikes** (temporarily reverting back to **Lexinek** because i was unable to solve this issue and it is critical to be able to run pipelines!
This is failing (repository is in group `Apploud` so it should be able to pull the image):
```yml
stages:
- build
image: registry.gitlab.com/apploud/docker/webserver:latest
composer:
stage: build
script:
- composer install --no-interaction --ansi --prefer-dist --optimize-autoloader --ignore-platform-reqs
artifacts:
paths:
- vendor/
expire_in: 24h
```
### Steps to reproduce
Trigger a pipeline with image from private gitlab registry after changing username
### Example Project
Tested on private repositories only.
### What is the current *bug* behavior?
When runner is trying to pull image from private gitlab's docker registry it fails on Access Denied.
Does not work neither with **shared** or **private** self hosted runners
### What is the expected *correct* behavior?
Image gets pulled and pipeline finishes successfully.
### Relevant logs and/or screenshots
After username change:
Before (or after revert) username change:
### Output of checks
This bug happens on GitLab.com
issue