229 lines
8.8 KiB
Markdown
229 lines
8.8 KiB
Markdown
---
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comments: false
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description: 'Learn how to contribute to GitLab.'
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---
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# Contributor and Development Docs
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## Get started
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- Set up GitLab's development environment with [GitLab Development Kit (GDK)](https://gitlab.com/gitlab-org/gitlab-development-kit/blob/master/doc/howto/README.md)
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- [GitLab contributing guide](contributing/index.md)
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- [Issues workflow](contributing/issue_workflow.md). For information on:
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- Issue tracker guidelines.
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- Triaging.
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- Labels.
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- Feature proposals.
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- Issue weight.
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- Regression issues.
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- Technical or UX debt.
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- [Merge requests workflow](contributing/merge_request_workflow.md). For
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information on:
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- Merge request guidelines.
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- Contribution acceptance criteria.
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- Definition of done.
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- Dependencies.
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- [Style guides](contributing/style_guides.md)
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- [Implement design & UI elements](contributing/design.md)
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- [GitLab Architecture Overview](architecture.md)
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- [Rake tasks](rake_tasks.md) for development
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## Processes
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**Must-reads:**
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- [Code review guidelines](code_review.md) for reviewing code and having code reviewed
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- [Database review guidelines](database_review.md) for reviewing database-related changes and complex SQL queries, and having them reviewed
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- [Secure coding guidelines](secure_coding_guidelines.md)
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- [Pipelines for the GitLab project](pipelines.md)
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Complementary reads:
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- [GitLab core team & GitLab Inc. contribution process](https://gitlab.com/gitlab-org/gitlab/blob/master/PROCESS.md)
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- [Security process for developers](https://gitlab.com/gitlab-org/release/docs/blob/master/general/security/developer.md#security-releases-critical-non-critical-as-a-developer)
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- [Guidelines for implementing Enterprise Edition features](ee_features.md)
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- [Danger bot](dangerbot.md)
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- [Generate a changelog entry with `bin/changelog`](changelog.md)
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- [Requesting access to Chatops on GitLab.com](chatops_on_gitlabcom.md#requesting-access) (for GitLab team members)
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## UX and Frontend guides
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- [GitLab Design System](https://design.gitlab.com/) for building GitLab with existing CSS styles and elements
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- [Frontend guidelines](fe_guide/index.md)
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- [Emoji guide](fe_guide/emojis.md)
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## Backend guides
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- [GitLab utilities](utilities.md)
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- [Issuable-like Rails models](issuable-like-models.md)
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- [Logging](logging.md)
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- [API styleguide](api_styleguide.md) Use this styleguide if you are
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contributing to the API
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- [GraphQL API styleguide](api_graphql_styleguide.md) Use this
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styleguide if you are contributing to the [GraphQL API](../api/graphql/index.md)
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- [Sidekiq guidelines](sidekiq_style_guide.md) for working with Sidekiq workers
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- [Working with Gitaly](gitaly.md)
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- [Manage feature flags](feature_flags/index.md)
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- [Licensed feature availability](licensed_feature_availability.md)
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- [View sent emails or preview mailers](emails.md)
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- [Shell commands](shell_commands.md) in the GitLab codebase
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- [`Gemfile` guidelines](gemfile.md)
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- [Pry debugging](pry_debugging.md)
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- [Sidekiq debugging](sidekiq_debugging.md)
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- [Accessing session data](session.md)
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- [Gotchas](gotchas.md) to avoid
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- [Avoid modules with instance variables](module_with_instance_variables.md) if possible
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- [How to dump production data to staging](db_dump.md)
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- [Working with the GitHub importer](github_importer.md)
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- [Import/Export development documentation](import_export.md)
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- [Test Import Project](import_project.md)
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- [Elasticsearch integration docs](elasticsearch.md)
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- [Working with Merge Request diffs](diffs.md)
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- [Kubernetes integration guidelines](kubernetes.md)
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- [Permissions](permissions.md)
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- [Prometheus](prometheus.md)
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- [Guidelines for reusing abstractions](reusing_abstractions.md)
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- [DeclarativePolicy framework](policies.md)
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- [How Git object deduplication works in GitLab](git_object_deduplication.md)
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- [Geo development](geo.md)
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- [Routing](routing.md)
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- [Repository mirroring](repository_mirroring.md)
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- [Git LFS](lfs.md)
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- [Developing against interacting components or features](interacting_components.md)
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- [File uploads](uploads.md)
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- [Auto DevOps development guide](auto_devops.md)
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- [Mass Inserting Models](mass_insert.md)
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- [Value Stream Analytics development guide](value_stream_analytics.md)
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- [Issue types vs first-class types](issue_types.md)
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- [Application limits](application_limits.md)
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- [Redis guidelines](redis.md)
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- [Rails initializers](rails_initializers.md)
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- [Code comments](code_comments.md)
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- [Renaming features](renaming_features.md)
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## Performance guides
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- [Instrumentation](instrumentation.md) for Ruby code running in production
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environments
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- [Performance guidelines](performance.md) for writing code, benchmarks, and
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certain patterns to avoid
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- [Merge request performance guidelines](merge_request_performance_guidelines.md)
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for ensuring merge requests do not negatively impact GitLab performance
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- [Profiling](profiling.md) a URL, measuring performance using Sherlock, or
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tracking down N+1 queries using Bullet
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## Database guides
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### Tooling
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- [Understanding EXPLAIN plans](understanding_explain_plans.md)
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- [explain.depesz.com](https://explain.depesz.com/) for visualising the output
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of `EXPLAIN`
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- [pgFormatter](http://sqlformat.darold.net/) a PostgreSQL SQL syntax beautifier
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### Migrations
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- [What requires downtime?](what_requires_downtime.md)
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- [SQL guidelines](sql.md) for working with SQL queries
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- [Migrations style guide](migration_style_guide.md) for creating safe SQL migrations
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- [Testing Rails migrations](testing_guide/testing_migrations_guide.md) guide
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- [Post deployment migrations](post_deployment_migrations.md)
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- [Background migrations](background_migrations.md)
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- [Swapping tables](swapping_tables.md)
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- [Deleting migrations](deleting_migrations.md)
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### Debugging
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- Tracing the source of an SQL query using query comments with [Marginalia](database_query_comments.md)
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- Tracing the source of an SQL query in Rails console using [Verbose Query Logs](https://guides.rubyonrails.org/debugging_rails_applications.html#verbose-query-logs)
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### Best practices
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- [Adding database indexes](adding_database_indexes.md)
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- [Foreign keys & associations](foreign_keys.md)
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- [Single table inheritance](single_table_inheritance.md)
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- [Polymorphic associations](polymorphic_associations.md)
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- [Serializing data](serializing_data.md)
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- [Hash indexes](hash_indexes.md)
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- [Storing SHA1 hashes as binary](sha1_as_binary.md)
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- [Iterating tables in batches](iterating_tables_in_batches.md)
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- [Insert into tables in batches](insert_into_tables_in_batches.md)
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- [Ordering table columns](ordering_table_columns.md)
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- [Verifying database capabilities](verifying_database_capabilities.md)
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- [Database Debugging and Troubleshooting](database_debugging.md)
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- [Query Count Limits](query_count_limits.md)
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- [Creating enums](creating_enums.md)
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### Case studies
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- [Database case study: Filtering by label](filtering_by_label.md)
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- [Database case study: Namespaces storage statistics](namespaces_storage_statistics.md)
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## Integration guides
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- [Jira Connect app](integrations/jira_connect.md)
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- [Security Scanners](integrations/secure.md)
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- [Secure Partner Integration](integrations/secure_partner_integration.md)
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- [How to run Jenkins in development environment](integrations/jenkins.md)
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## Testing guides
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- [Testing standards and style guidelines](testing_guide/index.md)
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- [Frontend testing standards and style guidelines](testing_guide/frontend_testing.md)
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## Refactoring guides
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- [Refactoring guidelines](refactoring_guide/index.md)
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## Documentation guides
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- [Writing documentation](documentation/index.md)
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- [Documentation styleguide](documentation/styleguide.md)
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- [Markdown](../user/markdown.md)
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## Internationalization (i18n) guides
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- [Introduction](i18n/index.md)
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- [Externalization](i18n/externalization.md)
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- [Translation](i18n/translation.md)
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## Telemetry guides
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- [Introduction](../telemetry/index.md)
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- [Frontend tracking guide](../telemetry/frontend.md)
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- [Backend tracking guide](../telemetry/backend.md)
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## Experiment Guide
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- [Introduction](experiment_guide/index.md)
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## Build guides
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- [Building a package for testing purposes](build_test_package.md)
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## Compliance
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- [Licensing](licensing.md) for ensuring license compliance
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## Go guides
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- [Go Guidelines](go_guide/index.md)
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## Shell Scripting guides
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- [Shell scripting standards and style guidelines](shell_scripting_guide/index.md)
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## Domain-specific guides
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- [CI/CD development documentation](cicd/index.md)
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## Other Development guides
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- [Defining relations between files using projections](projections.md)
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- [Reference processing](./reference_processing.md)
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## Other GitLab Development Kit (GDK) guides
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- [Run full Auto DevOps cycle in a GDK instance](https://gitlab.com/gitlab-org/gitlab-development-kit/blob/master/doc/howto/auto_devops.md)
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- [Using GitLab Runner with GDK](https://gitlab.com/gitlab-org/gitlab-development-kit/blob/master/doc/howto/runner.md)
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- [Using the Web IDE terminal with GDK](https://gitlab.com/gitlab-org/gitlab-development-kit/-/blob/master/doc/howto/web_ide_terminal_gdk_setup.md)
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