mirror of https://github.com/docker/docs.git
76 lines
2.5 KiB
Markdown
76 lines
2.5 KiB
Markdown
---
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title: Use containers for Deno development
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linkTitle: Develop your app
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weight: 20
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keywords: deno, local, development
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description: Learn how to develop your Deno application locally.
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aliases:
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- /language/deno/develop/
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---
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## Prerequisites
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Complete [Containerize a Deno application](containerize.md).
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## Overview
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In this section, you'll learn how to set up a development environment for your containerized application. This includes:
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- Configuring Compose to automatically update your running Compose services as you edit and save your code
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## Get the sample application
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Clone the sample application to use with this guide. Open a terminal, change directory to a directory that you want to work in, and run the following command to clone the repository:
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```console
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$ git clone https://github.com/dockersamples/docker-deno.git && cd docker-deno
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```
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## Automatically update services
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Use Compose Watch to automatically update your running Compose services as you
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edit and save your code. For more details about Compose Watch, see [Use Compose
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Watch](/manuals/compose/how-tos/file-watch.md).
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Open your `compose.yml` file in an IDE or text editor and then add the Compose Watch instructions. The following example shows how to add Compose Watch to your `compose.yml` file.
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```yaml {hl_lines="9-12",linenos=true}
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services:
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server:
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image: deno-server
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build:
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context: .
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dockerfile: Dockerfile
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ports:
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- "8000:8000"
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develop:
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watch:
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- action: rebuild
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path: .
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```
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Run the following command to run your application with Compose Watch.
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```console
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$ docker compose watch
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```
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Now, if you modify your `server.ts` you will see the changes in real time without re-building the image.
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To test it out, open the `server.ts` file in your favorite text editor and change the message from `{"Status" : "OK"}` to `{"Status" : "Updated"}`. Save the file and refresh your browser at `http://localhost:8000`. You should see the updated message.
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Press `ctrl+c` in the terminal to stop your application.
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## Summary
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In this section, you also learned how to use Compose Watch to automatically rebuild and run your container when you update your code.
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Related information:
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- [Compose file reference](/reference/compose-file/)
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- [Compose file watch](/manuals/compose/how-tos/file-watch.md)
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- [Multi-stage builds](/manuals/build/building/multi-stage.md)
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## Next steps
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In the next section, you'll take a look at how to set up a CI/CD pipeline using GitHub Actions.
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