60 lines
1.8 KiB
YAML
60 lines
1.8 KiB
YAML
name: Docker Build & Publish
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# This tells GitHub: "Run this every time I push code to the main branch"
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on:
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push:
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branches: [ "main" ]
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# Also run if I create a Release tag (e.g., v1.0)
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tags: [ 'v*.*.*' ]
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pull_request:
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branches: [ "main" ]
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env:
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# Use GitHub's built-in registry (ghcr.io)
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REGISTRY: ghcr.io
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# Use the repository name as the image name
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IMAGE_NAME: ${{ github.repository }}
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jobs:
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build:
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runs-on: ubuntu-latest
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permissions:
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contents: read
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packages: write # Needed to push the image to GHCR
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steps:
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- name: Checkout repository
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uses: actions/checkout@v3
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# Set up Docker Buildx (The builder engine)
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v2
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# Login to GitHub Container Registry using the automatic GitHub Token
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- name: Log into registry ${{ env.REGISTRY }}
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if: github.event_name != 'pull_request'
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uses: docker/login-action@v2
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with:
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registry: ${{ env.REGISTRY }}
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username: ${{ github.actor }}
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password: ${{ secrets.GITHUB_TOKEN }}
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# Generate tags (e.g., :latest, :v1.0, :main)
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- name: Extract Docker metadata
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id: meta
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uses: docker/metadata-action@v4
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with:
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images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
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tags: |
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type=raw,value=latest,enable={{is_default_branch}}
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type=ref,event=branch
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type=semver,pattern={{version}}
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# Build the image and push it to the registry
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- name: Build and push Docker image
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uses: docker/build-push-action@v4
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with:
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context: .
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push: ${{ github.event_name != 'pull_request' }}
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tags: ${{ steps.meta.outputs.tags }}
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labels: ${{ steps.meta.outputs.labels }}
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