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C# (.NET) and Azure Cosmos DB

Summary

Metadata Value
Contributors Yuta Matsumura
Categories Services, Azure
Definition type Docker Compose
Published image architecture(s) x86-64
Available image variants 6.0-focal
Works in Codespaces Yes
Container host OS support Linux, macOS
Container OS Ubuntu (-focal), Debian (-bullseye)
Languages, platforms .NET, .NET Core, C#, Microsoft Azure

Descirption

This definition creates two containers, one for C# (.NET) and one for Azure Cosmos DB Emulator. VS Code will attach to the .NET Core container, and from within that container the Azure Cosmos DB Emulator container will be available on localhost port 8081. For more on the configuration of Azure Cosmos DB Emulator, see the document Configuration options

Using this definition

[Optional] Include any special setup requirements here. For example:

While the definition itself works unmodified, you can select the version of YOUR RUNTIME HERE the container uses by updating the VARIANT arg in the included .devcontainer/devcontainer.json file.

"args": { "VARIANT": "6.0-bullseye" }

Using the forwardPorts property

"forwardPorts": [ 8081 ]

This port is used by Azure Cosmos DB Emulator to expose Explorer. The explorer can be accessed at https://localhost:8081/_explorer/index.html .

Adding the definition to a project or codespace

  1. If this is your first time using a development container, please see getting started information on setting up Remote-Containers or creating a codespace using GitHub Codespaces.

  2. Start VS Code and open your project folder or connect to a codespace.

  3. Press F1 select and Add Development Container Configuration Files... command for Remote-Containers or Codespaces.

    Note: If needed, you can drag-and-drop the .devcontainer folder from this sub-folder in a locally cloned copy of this repository into the VS Code file explorer instead of using the command.

  4. Select this definition. You may also need to select Show All Definitions... for it to appear.

  5. Finally, press F1 and run Remote-Containers: Reopen Folder in Container or Codespaces: Rebuild Container to start using the definition.

Testing the definition

This definition includes some test code that will help you verify it is working as expected on your system. Follow these steps:

  1. If this is your first time using a development container, please follow the getting started steps to set up your machine.
  2. Clone this repository.
  3. Start VS Code, press F1, and select Remote-Containers: Open Folder in Container...
  4. Select the containers/azure-cosmosdb-emulator folder.
  5. After the folder has opened in the container, if prompted to restore packages in a notification, click "Restore".
  6. After packages are restored, run dotnet run --project test-project/app.csproj in `.
  7. Open the browser to https://localhost:8081/_explorer/index.html.
  8. You should see "Azure Cosmos DB Emulator Explorer" and see added items.
  9. From here, you can add breakpoints or edit the contents of the test-project folder to do further testing.