22 lines
727 B
Markdown
22 lines
727 B
Markdown
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---
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stage: Verify
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group: Runner
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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comments: false
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type: index
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---
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# GitLab CI services examples
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The [`services`](../docker/using_docker_images.md#what-is-a-service)
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keyword defines a Docker image that runs during a `job` linked to the
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Docker image that the image keyword defines. This allows you to access
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the service image during build time.
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The service image can run any application, but the most common use
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case is to run a database container, for example:
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- [Using MySQL](mysql.md)
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- [Using PostgreSQL](postgres.md)
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- [Using Redis](redis.md)
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