Running Jobs in a Container

We can run jobs in a container in the following way -

1. Running a job within a container

name: My CI
on:
    push:
        branches: [main]
jobs:
    container-job:
        runs-on: ubuntu-latest
        container:
            image: crazyuploader/minimal_ubuntu:latest
            env:
                IS_PRODUCTION: true

If no other options are specified, we can simply write -

jobs:
    container-job:
        runs-on: ubuntu-latest
        container: crazyuploader/minimal_ubuntu:latest

2. Defining credentials for a container registry

container:
    image: crazyuploader/private_container
    credentials:
        username: ${{ secrets.USERNAME }}
        password: ${{ secrets.PASSWORD }}

Reference: GitHub Actions - GitHub Docs