Task involves .gitlab-ci.yml file
Pipeline performance optimization required
Caching strategy implementation needed
Conditional job execution configuration
Secret/environment variable management
Docker-in-Docker (dind) workflow setup
Pipeline job failure troubleshooting
GitLab CI Steps composition for reusable workflow units

CONSTRAINTS:

The model must validate .gitlab-ci.yml syntax before committing
The model must implement caching for dependencies to minimize build time
The model must use masked variables for sensitive data
The model must define timeout limits for all jobs
The model must test pipelines locally with gitlab-ci-local before pushing
The model must use .gitlab-ci.yml include feature for modular configurations
The model must optimize job dependencies to prevent unnecessary execution
The model must implement comprehensive testing at each pipeline stage

REFERENCES:

Pipeline Optimization Guide - Caching strategies, job parallelization, Docker optimization patterns
Common Patterns - Reusable configuration examples
GitLab CI Steps Documentation - Steps feature overview, syntax, implementation details

Domain 2: GitLab Flavored Markdown (GLFM)

The model must apply for GitLab documentation creation using GLFM syntax.

TRIGGERS:

Writing README files for GitLab projects
Creating GitLab Wiki pages
API documentation with GitLab syntax highlighting
User guides requiring collapsible sections
Process flow diagrams with Mermaid
Changelogs with GitLab issue/MR references

GLFM_SYNTAX_FEATURES:

Alert blocks: [!note], [!tip], [!important], [!caution], [!warning]
Collapsible sections: <details><summary> syntax
Mermaid diagrams for visualizations
Task lists with completion tracking
GitLab references: #issue, !MR, @user
Table of contents generation
Math expressions support
Color chips for design documentation

CRITICAL_SYNTAX_RULES:

The model must enforce these non-negotiable GLFM rendering requirements:

Alert types MUST be lowercase: [!note] not [!Note] or [!NOTE]
<details><summary> MUST be single line: <details><summary>Text</summary> not multi-line
No markdown syntax inside <summary> tags - use HTML equivalents (<code>, <strong>)
The model must validate rendering with validate-glfm.py script before finalizing

REFERENCE:

GLFM Syntax Reference - Complete syntax guide, examples, common mistakes

Domain 3: Local Pipeline Testing

The model must apply for local GitLab CI/CD pipeline execution with gitlab-ci-local.

TRIGGERS:

Testing .gitlab-ci.yml changes before push
Debugging pipeline job failures locally
Validating release workflows without actual release creation
Testing specific jobs/stages in isolation
Verifying conditional job execution logic
Checking artifact generation and dependencies

SETUP_PROCEDURE:

# 1. Install gitlab-ci-local globally
npm install -g gitlab-ci-local

# 2. Configure authentication tokens
# Edit $HOME/.gitlab-ci-local/variables.yml

# 3. Set project-specific variables
# Create .gitlab-ci-local-variables.yml in project root

# 4. Execute job locally
gitlab-ci-local <job-name>

COMMON_OPERATIONS:

gitlab-ci-local --list                    # List all jobs
gitlab-ci-local --preview                 # Preview parsed configuration
gitlab-ci-local --stage test              # Run specific stage
gitlab-ci-local --needs release           # Run with dependencies
gitlab-ci-local --timestamps job-name     # Debug with timestamps

REFERENCE:

GitLab CI Local Guide - Setup, authentication, troubleshooting, examples

Domain 4: GitLab CLI (glab)

The model must apply for GitLab repository and pipeline operations via the glab CLI.

TRIGGERS:

Monitoring pipeline status from terminal
Linting CI configuration before push
Listing or inspecting pipelines and jobs
Non-interactive CI/CD operations in scripts or automation

CRITICAL: AVOID INTERACTIVE COMMANDS

The glab ci view command launches an interactive TUI. Use non-interactive alternatives:

# INTERACTIVE (avoid in automation):
glab ci view                    # Opens interactive TUI

# NON-INTERACTIVE alternatives:
glab ci status --compact        # Quick pass/fail status
glab ci get                     # Pipeline details as text
glab ci list --per-page 5       # Recent pipelines table

LINTING CI CONFIGURATION:

# Validate .gitlab-ci.yml syntax via GitLab API
glab ci lint

# Include job list in output
glab ci lint --include-jobs

# Simulate pipeline creation (dry run)
glab ci lint --dry-run --ref main

The lint command sends the local .gitlab-ci.yml to GitLab API for validation. This resolves include: directives from the remote repository, so included files must be committed and pushed for accurate validation.

PIPELINE MONITORING:

# List recent pipelines with status
glab ci list --per-page 5

# Get current branch pipeline details
glab ci get

# Quick status check (exits non-zero on failure)
glab ci status --compact

Output from glab ci get:

# Pipeline:
id:       1254276
status:   success
source:   push
ref:      main
sha:      c3f955e...
yaml Errors:

# Jobs:
job_name:  success

Output from glab ci list:

State            IID        Ref     Created
(success)    #1254276   (#4)   main    (1 minute ago)
(failed)     #1254271   (#3)   main    (15 minutes ago)

COMMON WORKFLOW:

# 1. Validate before commit
glab ci lint

# 2. Commit and push
git add . && git commit -m "message" && git push

# 3. Monitor pipeline
glab ci list --per-page 3
glab ci status --compact

# 4. On failure, get details
glab ci get

REFERENCE:

Run glab ci --help for full subcommand list. Each subcommand supports --help for detailed options.

Validation Checklist

CI/CD Pipeline Validation

The model must verify before committing .gitlab-ci.yml:

Syntax validated against GitLab CI schema
Jobs and stages use descriptive names, logical organization
Caching configured for dependencies
Secrets masked, environment variables secured
Conditional execution prevents unnecessary resource consumption
Artifacts configured with appropriate expiration
Timeout limits defined per job
Pipeline tested locally with gitlab-ci-local
Pipeline architecture documented

GLFM Documentation Validation

The model must verify before committing GLFM files:

Alert blocks use lowercase syntax: [!note], [!tip], [!important], [!caution], [!warning]
Collapsible sections use single-line <details><summary> format
No markdown syntax in <summary> tags
Mermaid diagrams used for process flows
Table of contents present for documents >100 lines
GitLab references used: #issue, !MR, @user
Code blocks have language specifiers
Heading hierarchy consistent (no skipped levels)
Rendered output validated with validate-glfm.py

Local Testing Validation

The model must verify local test environment:

gitlab-ci-local installed and accessible
Authentication tokens configured in $HOME/.gitlab-ci-local/variables.yml
Project variables defined in .gitlab-ci-local-variables.yml
Jobs execute locally without errors
Artifacts present in .gitlab-ci-local/artifacts/
Configuration validated with --preview flag

Utility Scripts

validate-glfm.py

Python script validates GLFM rendering via GitLab Markdown API.

Usage:

# Validate markdown file
uv run --with requests ./scripts/validate-glfm.py --file README.md

# Validate inline markdown
uv run --with requests ./scripts/validate-glfm.py --markdown "> [!note]\n> Test alert"

# Save rendered HTML to file
uv run --with requests ./scripts/validate-glfm.py --file test.md --output rendered.html

Capabilities:

Automatic GITLAB_TOKEN environment variable loading
File or inline markdown input
HTML output to stdout or file
Verbose debugging mode (--verbose)
Error handling with retry logic

Reference Documentation

CI/CD Pipeline References:

pipeline-optimization.md - Performance optimization, caching strategies, job parallelization, Docker patterns
common-patterns.md - Reusable .gitlab-ci.yml configuration patterns

GLFM References:

glfm-syntax.md - Complete syntax guide, examples, anti-patterns

gitlab-ci-local References:

gitlab-ci-local-guide.md - Setup, authentication, troubleshooting, real-world examples

GitLab CI Steps References:

ci-steps/index.md - Overview, navigation hub
ci-steps/steps-overview.md - Technical reference, syntax, specification, capabilities
ci-steps/examples.md - Real-world usage patterns, implementation examples
ci-steps/step-runner-architecture.md - Implementation details, architecture, step-runner execution engine internals

Execution Protocol

The model must follow this sequence when gitlab-skill applies:

Update documentation reference (first step on skill activation):
```
uv run scripts/sync-gitlab-docs.py --working-dir .
```
- Updates GitLab CI documentation from official repository
- Respects 3-day cooldown (successful runs only)
- Use --force flag to bypass cooldown if needed
- Creates/updates Documentation Index in this SKILL.md file
- Lock file: .sync-gitlab-docs.lock (gitignored)
Identify domain: CI/CD configuration, GLFM documentation, or local testing
Load domain-specific reference files for technical specifications
Apply domain constraints and validation rules
Execute domain-specific validation checklist
Validate output using appropriate tooling (gitlab-ci-local or validate-glfm.py)

Quick Start Paths

IF task involves CI/CD pipeline:

Load pipeline-optimization.md
Review common-patterns.md for reusable configurations
Test locally with gitlab-ci-local before pushing

IF task involves GLFM documentation:

Load glfm-syntax.md
Apply CRITICAL_SYNTAX_RULES during writing
Validate rendering with validate-glfm.py script

IF task involves local pipeline testing:

Load gitlab-ci-local-guide.md
Verify authentication configuration in $HOME/.gitlab-ci-local/
Execute pipeline locally, verify artifacts in .gitlab-ci-local/artifacts/

Documentation Index

ci/
  ├── [Get started with GitLab CI/CD](./references/ci/_index.md)
      Build and test your application.
  ├── [Debugging CI/CD pipelines](./references/ci/debugging.md)
      Configuration validation, warnings, errors, and troubleshooting.
  ├── caching/
    ├── [Caching in GitLab CI/CD](./references/ci/caching/_index.md)
    ├── [CI/CD caching examples](./references/ci/caching/examples.md)
  ├── chatops/
    ├── [GitLab ChatOps](./references/ci/chatops/_index.md)
  ├── ci_cd_for_external_repos/
    ├── [GitLab CI/CD for external repositories](./references/ci/ci_cd_for_external_repos/_index.md)
        GitHub, Bitbucket, external sources, mirroring, and cross-platform.
    ├── [Using GitLab CI/CD with a Bitbucket Cloud repository](./references/ci/ci_cd_for_external_repos/bitbucket_integration.md)
        Connect your Bitbucket Cloud repository to GitLab CI/CD.
    ├── [External commit statuses](./references/ci/ci_cd_for_external_repos/external_commit_statuses.md)
        How external CI/CD systems integrate with GitLab pipelines using commit statuses.
    ├── [Using GitLab CI/CD with a GitHub repository](./references/ci/ci_cd_for_external_repos/github_integration.md)
        Connect your GitHub repository to GitLab CI/CD.
  ├── cloud_deployment/
    ├── [Deploy to AWS from GitLab CI/CD](./references/ci/cloud_deployment/_index.md)
        Deploy applications from GitLab CI/CD to AWS, including ECS and EC2, by using GitLab-provided Docker images and CloudFormation templates.
    ├── [Use GitLab CI/CD to deploy to Heroku](./references/ci/cloud_deployment/heroku.md)
        Deploy a GitLab project to Heroku by using GitLab CI/CD.
    ├── ecs/
      ├── [Deploy to Amazon Elastic Container Service](./references/ci/cloud_deployment/ecs/deploy_to_aws_ecs.md)
          Deploy a GitLab project to Amazon ECS. Containerize the application and set up continuous deployment, review apps, and security testing.
  ├── cloud_services/
    ├── [Connect to cloud services](./references/ci/cloud_services/_index.md)
    ├── aws/
      ├── [Configure OpenID Connect in AWS to retrieve temporary credentials](./references/ci/cloud_services/aws/_index.md)
    ├── azure/
      ├── [Configure OpenID Connect in Azure to retrieve temporary credentials](./references/ci/cloud_services/azure/_index.md)
    ├── google_cloud/
      ├── [Configure OpenID Connect with GCP Workload Identity Federation](./references/ci/cloud_services/google_cloud/_index.md)
  ├── components/
    ├── [CI/CD components](./references/ci/components/_index.md)
        Reusable, versioned CI/CD components for pipelines.
    ├── [CI/CD component examples](./references/ci/components/examples.md)
  ├── docker/
    ├── [Docker integration](./references/ci/docker/_index.md)
    ├── [Authenticate with registry in Docker-in-Docker](./references/ci/docker/authenticate_registry.md)
    ├── [Use Buildah to build multi-platform images](./references/ci/docker/buildah_rootless_multi_arch.md)
    ├── [Tutorial: Use Buildah in a rootless container with GitLab Runner Operator on OpenShift](./references/ci/docker/buildah_rootless_tutorial.md)
    ├── [Troubleshooting Docker Build](./references/ci/docker/docker_build_troubleshooting.md)
    ├── [Make Docker-in-Docker builds faster with Docker layer caching](./references/ci/docker/docker_layer_caching.md)
    ├── [Build Docker images with BuildKit](./references/ci/docker/using_buildkit.md)
    ├── [Use Docker to build Docker images](./references/ci/docker/using_docker_build.md)
    ├── [Run your CI/CD jobs in Docker containers](./references/ci/docker/using_docker_images.md)
        Learn how to run your CI/CD jobs in Docker containers hosted on dedicated CI/CD build servers or your local machine.
    ├── [Use kaniko to build Docker images (removed)](./references/ci/docker/using_kaniko.md)
  ├── environments/
    ├── [Environments](./references/ci/environments/_index.md)
        Environments, variables, dashboards, and review apps.
    ├── [Configure Kubernetes deployments (deprecated)](./references/ci/environments/configure_kubernetes_deployments.md)
    ├── [Deployment approvals](./references/ci/environments/deployment_approvals.md)
        Require approvals prior to deploying to a Protected Environment
    ├── [Deployment safety](./references/ci/environments/deployment_safety.md)
    ├── [Deployments](./references/ci/environments/deployments.md)
        Deployments, rollbacks, safety, and approvals.
    ├── [Environments Dashboard](./references/ci/environments/environments_dashboard.md)
        Monitor environments across multiple projects, including latest commits, pipeline status, and deployment times.
    ├── [Track deployments of an external deployment tool](./references/ci/environments/external_deployment_tools.md)
    ├── [Incremental rollouts with GitLab CI/CD](./references/ci/environments/incremental_rollouts.md)
        Kubernetes, CI/CD, risk mitigation, and deployment.
    ├── [Dashboard for Kubernetes](./references/ci/environments/kubernetes_dashboard.md)
    ├── [Protected environments](./references/ci/environments/protected_environments.md)
  ├── examples/
    ├── [GitLab CI/CD examples](./references/ci/examples/_index.md)
    ├── [Testing PHP projects](./references/ci/examples/php.md)
    ├── [Publish npm packages to the GitLab package registry using semantic-release](./references/ci/examples/semantic-release.md)
    ├── deployment/
      ├── [Using Dpl as a deployment tool](./references/ci/examples/deployment/_index.md)
      ├── [Running Composer and npm scripts with deployment via SCP in GitLab CI/CD](./references/ci/examples/deployment/composer-npm-deploy.md)
  ├── gitlab_google_cloud_integration/
    ├── [GitLab and Google Cloud integration](./references/ci/gitlab_google_cloud_integration/_index.md)
        Cloud services and Kubernetes deployments.
  ├── inputs/
    ├── [CI/CD inputs](./references/ci/inputs/_index.md)
    ├── [CI/CD input examples](./references/ci/inputs/examples.md)
  ├── interactive_web_terminal/
    ├── [Interactive web terminals](./references/ci/interactive_web_terminal/_index.md)
  ├── jobs/
    ├── [CI/CD Jobs](./references/ci/jobs/_index.md)
        Configuration, rules, caching, artifacts, and logs.
    ├── [GitLab CI/CD job token](./references/ci/jobs/ci_job_token.md)
    ├── [Fine-grained permissions for CI/CD job tokens](./references/ci/jobs/fine_grained_permissions.md)
    ├── [Job artifacts](./references/ci/jobs/job_artifacts.md)
    ├── [Troubleshooting job artifacts](./references/ci/jobs/job_artifacts_troubleshooting.md)
    ├── [Control how jobs run](./references/ci/jobs/job_control.md)
    ├── [Job execution flow](./references/ci/jobs/job_execution.md)
        Job execution steps.
    ├── [CI/CD job logs](./references/ci/jobs/job_logs.md)
    ├── [Specify when jobs run with `rules`](./references/ci/jobs/job_rules.md)
    ├── [Troubleshooting jobs](./references/ci/jobs/job_troubleshooting.md)
    ├── [Using SSH keys with GitLab CI/CD](./references/ci/jobs/ssh_keys.md)
  ├── migration/
    ├── [Migrate from Bamboo](./references/ci/migration/bamboo.md)
    ├── [Migrate from CircleCI](./references/ci/migration/circleci.md)
    ├── [Migrate from GitHub Actions](./references/ci/migration/github_actions.md)
    ├── [Migrate from Jenkins](./references/ci/migration/jenkins.md)
    ├── [Plan a migration from another tool to GitLab CI/CD](./references/ci/migration/plan_a_migration.md)
        Migrate from Jenkins, GitHub Actions, and others.
    ├── [Migrate from TeamCity](./references/ci/migration/teamcity.md)
    ├── examples/
      ├── [Migrate a Maven build from Jenkins to GitLab CI/CD](./references/ci/migration/examples/jenkins-maven.md)
  ├── mobile_devops/
    ├── [Mobile DevOps](./references/ci/mobile_devops/_index.md)
    ├── [Tutorial: Build Android apps with GitLab Mobile DevOps](./references/ci/mobile_devops/mobile_devops_tutorial_android.md)
    ├── [Tutorial: Build iOS apps with GitLab Mobile DevOps](./references/ci/mobile_devops/mobile_devops_tutorial_ios.md)
  ├── pipeline_editor/
    ├── [Pipeline editor](./references/ci/pipeline_editor/_index.md)
  ├── pipeline_security/
    ├── [Pipeline security](./references/ci/pipeline_security/_index.md)
        Secrets management, job tokens, secure files, and cloud security.
    ├── slsa/
      ├── [GitLab SLSA](./references/ci/pipeline_security/slsa/_index.md)
      ├── [SLSA provenance specification](./references/ci/pipeline_security/slsa/provenance_v1.md)
  ├── pipelines/
    ├── [CI/CD pipelines](./references/ci/pipelines/_index.md)
        Configuration, automation, stages, schedules, and efficiency.
    ├── [Compute minutes](./references/ci/pipelines/compute_minutes.md)
        Calculations, quotas, purchase information.
    ├── [Compute usage for GitLab-hosted runners on GitLab Dedicated](./references/ci/pipelines/dedicated_hosted_runner_compute_minutes.md)
        Compute minutes, usage tracking, quota management for GitLab-hosted runners on GitLab Dedicated.
    ├── [Downstream pipelines](./references/ci/pipelines/downstream_pipelines.md)
    ├── [Troubleshooting downstream pipelines](./references/ci/pipelines/downstream_pipelines_troubleshooting.md)
    ├── [Compute usage for instance runners](./references/ci/pipelines/instance_runner_compute_minutes.md)
        Compute minutes, purchasing, usage tracking, quota management for instance runners on GitLab.com and GitLab Self-Managed.
    ├── [Merge request pipelines](./references/ci/pipelines/merge_request_pipelines.md)
        Learn how to use merge request pipelines in GitLab CI/CD to test changes efficiently, run targeted jobs, and improve code quality before merging.
    ├── [Merge trains](./references/ci/pipelines/merge_trains.md)
        Use merge trains to queue merge requests and prevent branch conflicts in GitLab CI/CD.
    ├── [Merged results pipelines](./references/ci/pipelines/merged_results_pipelines.md)
    ├── [Troubleshooting merge request pipelines](./references/ci/pipelines/mr_pipeline_troubleshooting.md)
    ├── [Pipeline architecture](./references/ci/pipelines/pipeline_architectures.md)
    ├── [Pipeline efficiency](./references/ci/pipelines/pipeline_efficiency.md)
    ├── [Types of pipelines](./references/ci/pipelines/pipeline_types.md)
    ├── [Scheduled pipelines](./references/ci/pipelines/schedules.md)
    ├── [Customize pipeline configuration](./references/ci/pipelines/settings.md)
  ├── quick_start/
    ├── [Tutorial: Create and run your first GitLab CI/CD pipeline](./references/ci/quick_start/_index.md)
    ├── [Tutorial: Create a complex pipeline](./references/ci/quick_start/tutorial.md)
  ├── resource_groups/
    ├── [Resource group](./references/ci/resource_groups/_index.md)
        Control the job concurrency in GitLab CI/CD
  ├── review_apps/
    ├── [Review apps](./references/ci/review_apps/_index.md)
        Set up and use review apps to create temporary environments for testing changes before merging.
  ├── runners/
    ├── [Runners](./references/ci/runners/_index.md)
        Configuration and job execution.
    ├── [Configuring runners](./references/ci/runners/configure_runners.md)
        Set timeouts, protect sensitive information, control behavior with tags and variables, and configure artifact and cache settings of your GitLab Runner.
    ├── [Using Git submodules with GitLab CI/CD](./references/ci/runners/git_submodules.md)
    ├── [Long polling](./references/ci/runners/long_polling.md)
    ├── [Migrating to the new runner registration workflow](./references/ci/runners/new_creation_workflow.md)
    ├── [Provision runners in Google Cloud Compute Engine](./references/ci/runners/provision_runners_google_cloud.md)
    ├── [Runner fleet dashboard for administrators](./references/ci/runners/runner_fleet_dashboard.md)
    ├── [Runner fleet dashboard for groups](./references/ci/runners/runner_fleet_dashboard_groups.md)
    ├── [Manage runners](./references/ci/runners/runners_scope.md)
        Learn about the types of runners, their availability, and how to manage them.
    ├── hosted_runners/
      ├── [GitLab-hosted runners](./references/ci/runners/hosted_runners/_index.md)
      ├── [GPU-enabled hosted runners](./references/ci/runners/hosted_runners/gpu_enabled.md)
      ├── [Hosted runners on Linux](./references/ci/runners/hosted_runners/linux.md)
      ├── [Hosted runners on macOS](./references/ci/runners/hosted_runners/macos.md)
      ├── [Hosted runners on Windows](./references/ci/runners/hosted_runners/windows.md)
  ├── secrets/
    ├── [Use external secrets in CI/CD](./references/ci/secrets/_index.md)
    ├── [Use AWS Secrets Manager secrets in GitLab CI/CD](./references/ci/secrets/aws_secrets_manager.md)
    ├── [Use Azure Key Vault secrets in GitLab CI/CD](./references/ci/secrets/azure_key_vault.md)
    ├── [Tutorial: Update HashiCorp Vault configuration to use ID Tokens](./references/ci/secrets/convert-to-id-tokens.md)
    ├── [Tutorial: Use Fortanix Data Security Manager (DSM) with GitLab](./references/ci/secrets/fortanix_dsm_integration.md)
    ├── [Use GCP Secret Manager secrets in GitLab CI/CD](./references/ci/secrets/gcp_secret_manager.md)
    ├── [Use HashiCorp Vault secrets in GitLab CI/CD](./references/ci/secrets/hashicorp_vault.md)
    ├── [Tutorial: Authenticating and reading secrets with HashiCorp Vault](./references/ci/secrets/hashicorp_vault_tutorial.md)
    ├── [OpenID Connect (OIDC) Authentication Using ID Tokens](./references/ci/secrets/id_token_authentication.md)
    ├── secrets_manager/
      ├── [GitLab Secrets Manager](./references/ci/secrets/secrets_manager/_index.md)
  ├── secure_files/
    ├── [Project-level secure files](./references/ci/secure_files/_index.md)
  ├── services/
    ├── [Services](./references/ci/services/_index.md)
    ├── [Use GitLab as a microservice](./references/ci/services/gitlab.md)
    ├── [Using MySQL](./references/ci/services/mysql.md)
    ├── [Using PostgreSQL](./references/ci/services/postgres.md)
    ├── [Using Redis](./references/ci/services/redis.md)
  ├── steps/
    ├── [CI/CD steps](./references/ci/steps/_index.md)
  ├── test_cases/
    ├── [Test cases](./references/ci/test_cases/_index.md)
        Test cases in GitLab can help your teams create testing scenarios in their existing development platform.
  ├── testing/
    ├── [Test with GitLab CI/CD](./references/ci/testing/_index.md)
        Generate test reports, code quality analysis, and security scans that display in merge requests.
    ├── [Accessibility testing](./references/ci/testing/accessibility_testing.md)
    ├── [Browser Performance Testing](./references/ci/testing/browser_performance_testing.md)
    ├── [Code Quality](./references/ci/testing/code_quality.md)
    ├── [Configure CodeClimate-based Code Quality scanning (deprecated)](./references/ci/testing/code_quality_codeclimate_scanning.md)
    ├── [Troubleshooting Code Quality](./references/ci/testing/code_quality_troubleshooting.md)
    ├── [Fail Fast Testing](./references/ci/testing/fail_fast_testing.md)
        Run only relevant RSpec tests using the fail-fast template to get faster feedback on code changes.
    ├── [Load Performance Testing](./references/ci/testing/load_performance_testing.md)
        Measure how code changes affect application performance using k6 load tests to assess response times and throughput under load.
    ├── [Metrics reports](./references/ci/testing/metrics_reports.md)
        Track and compare performance, memory, and custom metrics.
    ├── [Unit test report examples](./references/ci/testing/unit_test_report_examples.md)
    ├── [Unit test reports](./references/ci/testing/unit_test_reports.md)
        View and debug unit test results without searching through job logs.
    ├── code_coverage/
      ├── [Code coverage](./references/ci/testing/code_coverage/_index.md)
      ├── [Cobertura coverage report](./references/ci/testing/code_coverage/cobertura.md)
      ├── [JaCoCo coverage report](./references/ci/testing/code_coverage/jacoco.md)
  ├── triggers/
    ├── [Trigger pipelines with the API](./references/ci/triggers/_index.md)
  ├── variables/
    ├── [GitLab CI/CD variables](./references/ci/variables/_index.md)
        Configuration, usage, and security.
    ├── [Use CI/CD variables in job scripts](./references/ci/variables/job_scripts.md)
        Configuration, usage, and security.
    ├── [Predefined CI/CD variables reference](./references/ci/variables/predefined_variables.md)
    ├── [Troubleshooting CI/CD variables](./references/ci/variables/variables_troubleshooting.md)
    ├── [Where variables can be used](./references/ci/variables/where_variables_can_be_used.md)
        GitLab CI/CD variable usage and expansion across different environments.
  ├── yaml/
    ├── [CI/CD YAML syntax reference](./references/ci/yaml/_index.md)
        Pipeline configuration keywords, syntax, examples, and inputs.
    ├── [GitLab CI/CD artifacts reports types](./references/ci/yaml/artifacts_reports.md)
        Artifact report types for test results, security scans, code quality checks, and performance metrics.
    ├── [Deprecated keywords](./references/ci/yaml/deprecated_keywords.md)
    ├── [CI/CD expressions](./references/ci/yaml/expressions.md)
    ├── [Use CI/CD configuration from other files](./references/ci/yaml/includes.md)
        Use the `include` keyword to extend your CI/CD configuration with content from other YAML files.
    ├── [Validate GitLab CI/CD configuration](./references/ci/yaml/lint.md)
        Use the GitLab CI Lint tool to validate CI/CD configuration and simulate pipelines to find errors before jobs run.
    ├── [Matrix expressions in GitLab CI/CD](./references/ci/yaml/matrix_expressions.md)
    ├── [Make jobs start earlier with `needs`](./references/ci/yaml/needs.md)
    ├── [Scripts and job logs](./references/ci/yaml/script.md)
    ├── [Troubleshooting scripts and job logs](./references/ci/yaml/script_troubleshooting.md)
    ├── [Use Sigstore for keyless signing and verification](./references/ci/yaml/signing_examples.md)
    ├── [GitLab CI/CD `workflow` keyword](./references/ci/yaml/workflow.md)
    ├── [Optimize GitLab CI/CD configuration files](./references/ci/yaml/yaml_optimization.md)
        Use YAML anchors, !reference tags, and the `extends` keyword to reduce CI/CD configuration file complexity.

gitlab-skill

GitLab Skill

Identity

Capability Domains

Domain 1: CI/CD Pipeline Configuration