add flag to disable inner repo checkout

[slopp]

Currently the Github actions checkout the target repo twice, once in the default workflows we provide as templates, and again inside the deploy actions.

The second checkout makes it hard for teams who want to use actions to customize the file structure prior to deployment. One common use case is copying a parent utilities folder into the dagster project's build directory.

This PR adds a flag that does not change the default behavior but allows users to disable the second checkout:

steps:
       # first checkout
      - name: Checkout
        uses: actions/checkout@v3
        with:
          ref: ${{ github.head_ref }}
      - name: Build and deploy to Dagster Cloud serverless
        uses: dagster-io/dagster-cloud-action/actions/serverless_prod_deploy@v0.1
        with:
          dagster_cloud_api_token: ${{ secrets.DAGSTER_CLOUD_API_TOKEN }}
          location: ${{ toJson(matrix.location) }}
          organization_id: ${{ secrets.ORGANIZATION_ID }}
          # disable checkout within the action
          checkout_repo: 'false'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Does anyone know an easy way to actually test this change? I couldn't figure out how... and I'm not 100% certain the syntax for referencing an input in the if clause is correct 😬

We could also base the flag off of an env reference instead of an input. But I like that inputs are documented.

[github-actions[bot]]

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Location	Status	Link	Updated
from_gh_action		View in Cloud	Jan 09, 2023 at 04:52 PM (UTC)

[slopp]

@gibsondan I think that would be a good potential follow up. I wanted to keep the existing behavior as the defaults for now, and then see if the new action will work in a few examples (both with custom GHAs and with our regular examples)

[slopp]

Ok I was able to fix the syntax and run a test:

With the inner checkout enabled, this action fails: https://github.com/slopp/dagteam/actions/runs/3876566174/jobs/6610560330#step:4:19

With the inner checkout disabled, the action succeeds: https://github.com/slopp/dagteam/actions/runs/3876592965/jobs/6610617344

[slopp]

There's also a release process for the action to make it what everybody points at by default @gibsondan I think this PR is ready for that process