Develop Ruby based applications. includes everything you need to get up and running.

See history for information on the contents of published images.

You can directly reference pre-built versions of Dockerfile by using the image property in .devcontainer/devcontainer.json or updating the FROM statement in your own Dockerfile to one of the following. An example Dockerfile is included in this repository.

• mcr.microsoft.com/devcontainers/ruby (latest)
• mcr.microsoft.com/devcontainers/ruby:4 (or 4-trixie, 4-bookworm to pin to an OS version)
• mcr.microsoft.com/devcontainers/ruby:3.4 (or 3.4-trixie, 3.4-bookworm, 3.4-bullseye to pin to an OS version)
• mcr.microsoft.com/devcontainers/ruby:3.3 (or 3.3-trixie, 3.3-bookworm, 3.3-bullseye to pin to an OS version)
• mcr.microsoft.com/devcontainers/ruby:3.2 (or 3.2-trixie, 3.2-bookworm, 3.2-bullseye to pin to an OS version)

Refer to this guide for more details.

You can decide how often you want updates by referencing a semantic version of each image. For example:

• mcr.microsoft.com/devcontainers/ruby:3-4 (or 3-4-trixie, 3-4-bookworm, 3-4-bullseye to pin to an OS version)
• mcr.microsoft.com/devcontainers/ruby:3.0-4 (or 3.0-4-trixie, 3.0-4-bookworm, 3.0-4-bullseye to pin to an OS version)
• mcr.microsoft.com/devcontainers/ruby:3.0.2-4 (or 3.0.2-4-trixie, 3.0.2-4-bookworm, 3.0.2-4-bullseye to pin to an OS version)

However, we only do security patching on the latest non-breaking, in support versions of images (e.g. 2-4.0). You may want to run apt-get update && apt-get upgrade in your Dockerfile if you lock to a more specific version to at least pick up OS security updates.

See history for information on the contents of each version and here for a complete list of available tags.

Alternatively, you can use the contents of .devcontainer to fully customize your container's contents or to build it for a container host architecture not supported by the image.

Given JavaScript front-end web client code written for use in conjunction with a Ruby back-end often requires the use of Node.js-based utilities to build, this container also includes nvm so that you can easily install Node.js. You can change the version of Node.js installed or disable its installation by updating the args property in .devcontainer/devcontainer.json.

"args": {
    "VARIANT": "2",
    "NODE_VERSION": "14" // Set to "none" to skip Node.js installation
}

Copyright (c) Microsoft Corporation. All rights reserved.

Licensed under the MIT License. See LICENSE.