* fix(ci): Restrict template expressions

* Fix

* Fix

* Fix

* feat(manager/gitlabci): add support for CI_REGISTRY

* fix: pass correct property

* chore: adapt tests

* docs; add documentation for the new option

* test: extend test cases

* fix: do the abc properly

* refactor: switch to using registryAliases option

* docs: mention registry variable

* style: remove extra heading

* docs: fix sentence

Co-authored-by: HonkingGoose <34918129+HonkingGoose@users.noreply.github.com>

* docs: move documentation to managers

* docs: fix formatting

* refactor: handle default value in function body

* refactor: remove unused function

* refactor: move registry alias handling to dockerfile manager

* style: remove unused import

* refactor: use match groups directly

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

* refactor: add dockerfile manager tests

* chore: fix variable name

Co-authored-by: HonkingGoose <34918129+HonkingGoose@users.noreply.github.com>
Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

* refactor:  enable strict checks

* chore: revert changes

* chore: fix tsconfig

Co-authored-by: Jamie Magee <jamie.magee@gmail.com>
Co-authored-by: Michael Kriese <michael.kriese@visualon.de>
Co-authored-by: Rhys Arkins <rhys@arkins.net>

Moves datasource, manager, platform and versioning code from lib/ into new lib/modules/

BREAKING CHANGE: External tools must update paths to datasource, manager, platform and versioning

* fix(gitlabci): gracefully handle errors

* fix: remove debugging

* Update lib/manager/gitlabci/utils.ts

Co-authored-by: HonkingGoose <34918129+HonkingGoose@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: HonkingGoose <34918129+HonkingGoose@users.noreply.github.com>

Co-authored-by: HonkingGoose <34918129+HonkingGoose@users.noreply.github.com>