--- title: How to configure a custom Test Container on the... description: A step-by-step guide to creating a custom Testcontainers setup for EventStoreDB in TypeScript. Covers extending GenericContainer and AbstractStartedContainer... canonical: https://daily.dev/posts/how-to-configure-a-custom-test-container-on-the-eventstoredb-example-h2wivdeyn twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How to configure a custom Test Container on the EventStoreDB example | daily.dev og:description: A step-by-step guide to creating a custom Testcontainers setup for EventStoreDB in TypeScript. Covers extending GenericContainer and AbstractStartedContainer... og:url: https://daily.dev/posts/how-to-configure-a-custom-test-container-on-the-eventstoredb-example-h2wivdeyn og:image: https://api.daily.dev/og/posts/H2wivDEYN.png og:image:alt: How to configure a custom Test Container on the EventStoreDB example og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How to configure a custom Test Container on the EventStoreDB example **[Event-Driven by Oskar Dudycz](https://daily.dev/sources/event-driven-io)** · 7 min read · 0 upvotes · 0 comments ## Summary A step-by-step guide to creating a custom Testcontainers setup for EventStoreDB in TypeScript. Covers extending GenericContainer and AbstractStartedContainer to build EventStoreDBContainer and StartedEventStoreDBContainer classes, configuring default environment variables (insecure mode, in-memory storage, single-node cluster), exposing ports, enabling container reuse for faster test runs, and adding a getClient() helper. Also handles ARM64 (Apple M1) image selection automatically. The resulting implementation is available as the @event-driven-io/emmett-testcontainers npm package. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Integration testing Node.js with Testcontainers](https://daily.dev/posts/integration-testing-node-js-with-testcontainers-nuqgjujki) · Flavio Copes · 1 upvotes · 0 comments --- Tags: [#testing](https://daily.dev/tags/testing), [#architecture](https://daily.dev/tags/architecture), [#typescript](https://daily.dev/tags/typescript) [View this post on daily.dev](https://daily.dev/posts/how-to-configure-a-custom-test-container-on-the-eventstoredb-example-h2wivdeyn) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"How to configure a custom Test Container on the EventStoreDB example","url":"https://daily.dev/posts/how-to-configure-a-custom-test-container-on-the-eventstoredb-example-h2wivdeyn","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-to-configure-a-custom-test-container-on-the-eventstoredb-example-h2wivdeyn"},"datePublished":"2026-06-17T11:26:11.533Z","dateModified":"2026-06-17T11:31:09.373Z","description":"A step-by-step guide to creating a custom Testcontainers setup for EventStoreDB in TypeScript. 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