[docs] Add Elm in Gitpod

src/docs/elm-in-gitpod.md

@@ -0,0 +1,68 @@
+# Elm in Gitpod
+
+## Examples
+
+<div class="table-container">
+
+| Repository | Description | Try It |
+|------------|--------------|--------|
+|[elm-spa-example](https://github.com/svenefftinge/elm-spa-example) | A Single Page Application written in Elm | [![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/svenefftinge/elm-spa-example) 
+
+</div>
+
+## Installing Elm
+
+To install Elm please add the following to your [.gitpod.Dockerfile](https://www.gitpod.io/docs/config-gitpod-file/)
+
+```Dockerfile
+# Install Elm
+RUN curl -L -o elm.gz https://github.com/elm/compiler/releases/download/0.19.1/binary-for-linux-64-bit.gz \
+    && gunzip elm.gz \
+    && chmod +x elm \
+    && sudo mv elm /usr/local/bin/
+```
+
+## Formatting Elm Code 
+
+To auto-format Elm code add the following to your [.gitpod.Dockerfile](https://www.gitpod.io/docs/config-gitpod-file/)
+
+```Dockerfile
+RUN npm install -g elm-format
+```
+
+## Testing Elm Code
+
+To test your Elm code please add the following to your [.gitpod.Dockerfile](https://www.gitpod.io/docs/config-gitpod-file/)
+```Dockerfile
+RUN npm install -g elm-test
+```
+
+## Linting Elm Code
+
+To lint your Elm code please add the following to your [.gitpod.Dockerfile](https://www.gitpod.io/docs/config-gitpod-file/)
+
+```Dockerfile
+RUN npm install -g elm-analyse
+```
+
+## VSCode Extensions
+
+### Elm
+
+![Demo of the Elm extension](images/ElmExtensionDemo.png)
+
+This extension adds many features:
+
+- Peek/Goto definition
+- [Intellisense](https://code.visualstudio.com/docs/editor/intellisense)/Code completion
+- Hover documentation
+- Autoformatting
+- Rename symbols
+
+To add this VSCode extension to your repository please add the following to your [.gitpod.yml](https://www.gitpod.io/docs/config-gitpod-file/) file
+
+```yaml
+vscode:
+  extensions:
+    - [email protected]:rb3k4mPelyC4Fqod9UBvvA==
+```

src/docs/languages-and-frameworks.md

@@ -14,3 +14,4 @@ Below is a list of language and framework specific tips & tricks.
   * [Rust](/docs/rust-in-gitpod/)
   * [Julia](/docs/julia-in-gitpod/)
   * [R](/docs/r-in-gitpod/)
+  * [Elm](/docs/elm-in-gitpod/)

src/docs/menu.ts

@@ -135,6 +135,10 @@ export const MENU: MenuEntry[] = [
             M(
                 "R",
                 "r-in-gitpod"
+            ),
+            M(
+                "Elm",
+                "elm-in-gitpod"
             )
         ]
     ),