[GitHub] rabbah commented on a change in pull request #3725: Add Ruby2.5 runtime support

[GitBox <gi...@apache.org>]

rabbah commented on a change in pull request #3725: Add Ruby2.5 runtime support
URL: https://github.com/apache/incubator-openwhisk/pull/3725#discussion_r193316824
 
 

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 File path: docs/reference.md
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 @@ -434,6 +434,14 @@ The following Composer packages are also available:
 - guzzlehttp/guzzle       v6.3.0
 - ramsey/uuid             v3.6.1
 
+## Ruby actions
+
+Ruby actions are executed using Ruby 2.5. To use this runtime, specify the `wsk` CLI parameter `--kind ruby:2.5` when creating or updating an action. This is the default when creating an action with file that has a `.rb` extension.
+
+A few Ruby gems such as `mechanize` and `jwt` are available in addition to the default and bundled gems. See Dockerfile of ruby runtime image for more information.
+
+Last but not least, you can use arbitrary gem so long as you use zipped actions to package all the dependencies. doc/actions.md will explain how to do this.
 
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