Dev container for gleam lang development

containers/gleam-erlang/.devcontainer/Dockerfile

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+FROM mcr.microsoft.com/vscode/devcontainers/base:debian
+
+ARG GLEAM_VERSION="v0.18.2"
+
+RUN apt-get update \
+  && export DEBIAN_FRONTEND=noninteractive \
+  && apt-get -y install --no-install-recommends erlang 2>&1 \
+  && curl -sSL https://github.com/gleam-lang/gleam/releases/download/${GLEAM_VERSION}/gleam-${GLEAM_VERSION}-linux-amd64.tar.gz -o /tmp/gleam.tar.az \
+  && tar -xzvf /tmp/gleam.tar.az -C /usr/local/bin \
+  # Clean up
+  && apt-get autoremove -y \
+  && apt-get clean -y \
+  && rm -rf /var/lib/apt/lists/* /tmp/gleam.tar.az
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update \
+#     && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+# [Optional] Uncomment this line to install additional package.
+# RUN  gleam add ...

containers/gleam-erlang/.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.224.2/containers/gleam-erlang
+{
+	"name": "Gleam with erlang (Community)",
+	"build": {
+		"dockerfile": "Dockerfile",
+		"args": {
+			// Elaem Version: v0.18.2, v0.17.0, ...
+			"GLEAM_VERSION": "v0.18.2"
+		}
+	},
+
+	// Add the IDs of extensions you want installed when the container is created.
+	"extensions": [
+		"Gleam.gleam",
+		"tamasfe.even-better-toml"
+	],
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	"forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "gleam -V"
+
+	// Uncomment to connect as a non-root user. See https://aka.ms/vscode-remote/containers/non-root.
+	"remoteUser": "vscode"
+}

containers/gleam-erlang/.npmignore

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+README.md
+test-project
+definition-manifest.json
+.vscode
+.npmignore

containers/gleam-erlang/README.md

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+# Gleam with Erlang Runtime (Community)
+
+## Summary
+
+_Develop Gleam based applications. Includes everything you need to get up and running._
+
+| Metadata                    | Value                 |
+| --------------------------- | --------------------- |
+| _Contributors_              | [mrchypark](https://github.com/mrchypark)|
+| _Category_                  | Community, Languages  |
+| _Definition type_           | Dockerfile            |
+| _Works in Codespaces_       | Yes                   |
+| _Container host OS support_ | Linux, macOS, Windows |
+| _Languages, platforms_      | Gleam                |
+
+## Using this definition
+
+While this definition should work unmodified, you can select the version of Gleam compiler the container uses by updating the `GLEAM_VERSION` arg in the included `devcontainer.json`.
+
+```json
+"args": { "GLEAM_VERSION": "v0.18.2" }
+```
+
+### Adding the definition to your folder
+
+1. If this is your first time using a development container, please see getting started information on [setting up](https://aka.ms/vscode-remote/containers/getting-started) Remote-Containers or [creating a codespace](https://aka.ms/ghcs-open-codespace) using GitHub Codespaces.
+
+2. Start VS Code and open your project folder or connect to a codespace.
+
+3. Press <kbd>F1</kbd> 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 <kbd>F1</kbd> 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](https://aka.ms/vscode-remote/containers/getting-started) to set up your machine.
+2. Clone this repository.
+3. Start VS Code, press <kbd>F1</kbd>, and select **Remote-Containers: Open Folder in Container...**
+4. Select the `containers/gleam-erlang` folder.
+5. After the folder has opened in the container, open a terminal in the `test-project` folder (`cd test-project/`) and run the following command: `gleam run test_project`
+6. You should see `Hello from test_project!` message after compile and run.
+
+## License
+
+Copyright (c) Microsoft Corporation. All rights reserved.
+
+Licensed under the MIT License. See [LICENSE](https://github.com/microsoft/vscode-dev-containers/blob/main/LICENSE).

containers/gleam-erlang/test-project/.gitignore

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+*.beam
+*.ez
+build
+erl_crash.dump

containers/gleam-erlang/test-project/README.md

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+# test_project
+
+A Gleam project
+
+## Quick start
+
+```sh
+gleam run   # Run the project
+gleam test  # Run the tests
+gleam shell # Run an Erlang shell
+```
+
+## Installation
+
+If available on Hex this package can be added to your Gleam project.
+
+```sh
+gleam add test_project
+```

containers/gleam-erlang/test-project/gleam.toml

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+name = "test_project"
+version = "0.1.0"
+
+# Fill out these fields if you intend to generate HTML documentation or publish
+# your project to the Hex package manager.
+#
+# licences = ["Apache-2.0"]
+# description = "A Gleam library..."
+# repository = { type = "github", user = "username", repo = "project" }
+# links = [{ title = "Website", href = "https://gleam.run" }]
+
+[dependencies]
+gleam_stdlib = "~> 0.18"
+
+[dev-dependencies]
+gleeunit = "~> 0.5"

containers/gleam-erlang/test-project/manifest.toml

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+# This file was generated by Gleam
+# You typically do not need to edit this file
+
+packages = [
+  { name = "gleam_stdlib", version = "0.18.1", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "763ECD87D54D08755EE4C8551720D122FDCA47F61D1CA8AF23B19A90395A7468" },
+  { name = "gleeunit", version = "0.5.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "F7FA7477D930178C1E59519DBDB5E086BE3A6B65F015B67DA94D30A323062154" },
+]
+
+[requirements]
+gleam_stdlib = "~> 0.18"
+gleeunit = "~> 0.5"

containers/gleam-erlang/test-project/src/test_project.gleam

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+import gleam/io
+
+pub fn main() {
+  io.println("Hello from test_project!")
+}

containers/gleam-erlang/test-project/test/test_project_test.gleam

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+import gleeunit
+import gleeunit/should
+
+pub fn main() {
+  gleeunit.main()
+}
+
+// gleeunit test functions end in `_test`
+pub fn hello_world_test() {
+  1
+  |> should.equal(1)
+}