How can I use Docker with GitHub Actions?

How can I use Docker with GitHub Actions?

You can use Docker with GitHub Actions by creating a workflow that builds and pushes your Docker images. Would you like a sample workflow?

Yes, please provide a sample workflow.

Here's a simple example:

name: CI

on:
  push:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
      - name: Build Docker image
        run: |
          docker build -t my-image:latest .
      - name: Push Docker image
        run: |
          echo ${{ secrets.DOCKER_PASSWORD }} | docker login -u ${{ secrets.DOCKER_USERNAME }} --password-stdin
          docker push my-image:latest

This workflow builds and pushes a Docker image to a registry when you push to the main branch.

What do I need to set up in my GitHub repository?

You'll need to set up secrets for your Docker Hub username and password in your GitHub repository settings. This allows the workflow to authenticate with Docker Hub.

Can I run tests inside the Docker container?

Absolutely! You can add a step in your workflow to run tests inside the Docker container after building it. Would you like to see how?