GitHub Actions are going to become generally-available next week so I created an action for installing Racket. You can find it on the marketplace. Here’s what a minimal CI configuration for a Racket package might look like:

on: [push, pull_request]
name: CI
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@master
      - uses: Bogdanp/setup-racket@v0.1
        with:
          architecture: x64
          distribution: full
          variant: regular
          version: 7.4
      - run: raco test --drdr my-package-test/

And a more involved one using a test matrix:

on: [push, pull_request]
name: CI
jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        racket-version: ["7.3", "7.4"]
        racket-variant: ["regular", "CS"]
    name: "CI using Racket ${{ matrix.racket-version }} (${{ matrix.racket-variant }})"
    steps:
      - uses: actions/checkout@master
      - uses: Bogdanp/setup-racket@v0.1
        with:
          architecture: x64
          distribution: full
          variant: ${{ matrix.racket-variant }}
          version: ${{ matrix.racket-version }}
      - run: raco test --drdr my-package-test/

The above configuration will cause the tests to be run against regular Racket 7.3 and 7.4 as well as Racket-on-Chez 7.3 and 7.4.

One limitation right now is that the Action only supports installing Racket on Linux targets, but I can update it to support Windows and macOS if there is interest.

Check it out an let me know what you think!