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Worflow syntax

Worflow syntax #3

name: Create and publish a Docker image
on:
push:
branches:
- main
env:
REGISTRY: ghcr.io
IMAGE_NAME: ${{ github.repository }}
SHORT_SHA: ${{ github.sha::8 }}

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The workflow is not valid. .github/workflows/publish-container.yml (Line: 11, Col: 14): Unexpected symbol: 'sha::8'. Located at position 8 within expression: github.sha::8 .github/workflows/publish-container.yml (Line: 51, Col: 13): A mapping was not expected
jobs:
build-and-push-image:
runs-on: ubuntu-latest
permissions:
contents: read
packages: write
steps:
- name: Checkout repository
uses: actions/checkout@v3
- name: Set outputs
id: sha_short
run: echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"
- name: Log in to the Container registry
uses: docker/login-action@v2
with:
registry: ${{ env.REGISTRY }}
username: ${{ github.actor }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Extract metadata (tags, labels) for Docker
id: meta
uses: docker/metadata-action@v4
with:
images: ${{ env.REGISTRY }}/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}
tags: |
type=sha,prefix=sha-,suffix=,format=short
type=ref,event=branch
- name: Build and push Docker image
uses: docker/build-push-action@v4
with:
context: .
push: true
tags: ${{ steps.meta.outputs.tags }}
env:
TAGS: ${{ steps.meta.outputs.tags }}
labels: ${{ steps.meta.outputs.labels }}
file: ./Dockerfile
- name: Post build info
run: |
echo "Docker image published successfully to GHCR with tags: $TAGS"