A Github Action to statically validate Fastlane metadata for Android (supply) using a simple validation logic written in Golang.

• Zero config
• Checks title, short description, full description and changelog texts
• Checks promo images
• Checks screenshots
• Tiny docker image ~800KB
• Can be used without GitHub actions

In one of my Android projects, I was facing a situation where other developers would translate Fastlane metadata for the Android app. There was no way to check its validity on the new Pull Requests. I even created a dedicated CI job to run fastlane supply with validate_only option. To run this job for PRs, I would need to expose the service account key for accessing the Play Store which is a major security flaw.

This action uses a docker image to validate Fastlane's metadata. The docker image is built from the Go code in this repository. The Go code is ~300 lines of validation logic to test all the files in Fastlane metadata against the constraints from the Play Store listing.

on: [pull_request]
jobs:
  # required to run on Linux because this is a docker container action
  runs-on: ubuntu-latest
  steps:
    - uses: actions/checkout@v1
    - uses: ashutoshgngwr/validate-fastlane-supply-metadata@v1
      with:
        fastlaneDir: ./fastlane # optional. default is './fastlane'

The GitHub action relies on a docker image which can be used directly.

docker run --rm --workdir /app --mount type=bind,source="$(pwd)",target=/app \
   ashutoshgngwr/validate-fastlane-supply-metadata:v1 -help

Apache License 2.0