fastlane are an awesome bunch of tools. Josh Holtz has recently started Fastlane Screencast, a website with videos/tutorials for explaining and implementing built-in fastlane tools, fastlane actions, third-party fastlane plugins, continuous integration, and anything else that fastlane can possibly do
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The first video covers integrating fastlane into your Ionic Framework build process:
A second tutorial – covering dotenv and environment variables – is already up too 🙂
Fastlane Screencast →
Fastlane Screencast: Integrate fastlane into your Ionic Framework build process →