(invalid_authorization_specification) role "runner" does not exist

Hey All,

I’m having an issue setting up Github actions. I’ve found this helpful link for standard elixir workflow .yml files: GitHub - actions/setup-elixir: Set up your GitHub Actions workflow with OTP and Elixir · GitHub

Here is my current elixir.yml

name: Elixir CI

on: push

jobs:
  test:
    runs-on: ubuntu-latest

    services:
      db:
        image: postgres:11
        ports: ['5432:5432']
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

    steps:
      - uses: actions/checkout@v1.0.0
      - uses: actions/setup-elixir@v1.0.0
        with:
          otp-version: 22.x
          elixir-version: 1.9.2
      - run: mix deps.get
      - run: mix test

But when this runs I’m getting this error during the mix test portion:

01:16:43.654 [error] GenServer #PID<0.7572.0> terminating
** (Postgrex.Error) FATAL 28000 (invalid_authorization_specification) role "runner" does not exist
    (db_connection) lib/db_connection/connection.ex:87: DBConnection.Connection.connect/2
    (connection) lib/connection.ex:622: Connection.enter_connect/5
    (stdlib) proc_lib.erl:249: :proc_lib.init_p_do_apply/3
Last message: nil
** (Mix) The database for Statcasters.Repo couldn't be created: killed
##[error]Process completed with exit code 1.

Can anybody help me understand what is going on here? Thank you!