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|
---
name: build-ublue-custom
on:
pull_request:
branches:
- main
schedule:
- cron: '05 10 * * *' # 10:05am UTC everyday
push:
branches:
- main
paths-ignore:
- '**/README.md'
workflow_dispatch:
env:
MY_IMAGE_NAME: "${{ github.event.repository.name }}" # the name of the image produced by this build, matches repo names
MY_IMAGE_DESC: "My Customized Universal Blue Image"
IMAGE_REGISTRY: "ghcr.io/${{ github.repository_owner }}" # do not edit
jobs:
build_push:
name: Build and push image
runs-on: ubuntu-latest
permissions:
contents: read
packages: write
id-token: write
steps:
# Checkout push-to-registry action GitHub repository
- name: Checkout Push to Registry action
uses: actions/checkout@v3
- name: Generate tags
id: generate-tags
shell: bash
run: |
# Generate a timestamp for creating an image version history
TIMESTAMP="$(date +%Y%m%d)"
COMMIT_TAGS=()
BUILD_TAGS=()
# Have tags for tracking builds during pull request
SHA_SHORT="${GITHUB_SHA::7}"
COMMIT_TAGS+=("pr-${{ github.event.number }}")
COMMIT_TAGS+=("${SHA_SHORT}")
# Append matching timestamp tags to keep a version history
for TAG in "${BUILD_TAGS[@]}"; do
BUILD_TAGS+=("${TAG}-${TIMESTAMP}")
done
BUILD_TAGS+=("${TIMESTAMP}")
BUILD_TAGS+=("latest")
if [[ "${{ github.event_name }}" == "pull_request" ]]; then
echo "Generated the following commit tags: "
for TAG in "${COMMIT_TAGS[@]}"; do
echo "${TAG}"
done
alias_tags=("${COMMIT_TAGS[@]}")
else
alias_tags=("${BUILD_TAGS[@]}")
fi
echo "Generated the following build tags: "
for TAG in "${BUILD_TAGS[@]}"; do
echo "${TAG}"
done
echo "alias_tags=${alias_tags[*]}" >> $GITHUB_OUTPUT
# Build metadata
- name: Image Metadata
uses: docker/metadata-action@v4
id: meta
with:
images: |
${{ env.MY_IMAGE_NAME }}
labels: |
io.artifacthub.package.readme-url=https://raw.githubusercontent.com/${{ github.repository }}/main/README.md
org.opencontainers.image.description=${{ env.MY_IMAGE_DESC }}
org.opencontainers.image.title=${{ env.MY_IMAGE_NAME }}
# Build image using Buildah action
- name: Build Image
id: build_image
uses: redhat-actions/buildah-build@v2
with:
containerfiles: |
./Containerfile
# Postfix image name with -custom to make it a little more descriptive
# Syntax: https://docs.github.com/en/actions/learn-github-actions/expressions#format
image: ${{ env.MY_IMAGE_NAME }}
tags: |
${{ steps.generate-tags.outputs.alias_tags }}
labels: ${{ steps.meta.outputs.labels }}
oci: false
# Workaround bug where capital letters in your GitHub username make it impossible to push to GHCR.
# https://github.com/macbre/push-to-ghcr/issues/12
- name: Lowercase Registry
id: registry_case
uses: ASzc/change-string-case-action@v5
with:
string: ${{ env.IMAGE_REGISTRY }}
- name: Login to GitHub Container Registry
uses: docker/login-action@v2
with:
registry: ghcr.io
username: ${{ github.actor }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Push Image to GHCR
uses: redhat-actions/push-to-registry@v2
id: push
env:
REGISTRY_USER: ${{ github.actor }}
REGISTRY_PASSWORD: ${{ github.token }}
with:
image: ${{ steps.build_image.outputs.image }}
tags: ${{ steps.build_image.outputs.tags }}
registry: ${{ steps.registry_case.outputs.lowercase }}
username: ${{ env.REGISTRY_USER }}
password: ${{ env.REGISTRY_PASSWORD }}
extra-args: |
--disable-content-trust
# This section is optional and only needs to be enabled in you plan on distributing
# your project to others to consume. You will need to create a public and private key
# using Cosign and save the private key as a repository secret in Github for this workflow
# to consume. For more details, review the image signing section of the README.
# Sign container
- uses: sigstore/cosign-installer@v3.4.0
if: github.event_name != 'pull_request'
- name: Sign container image
if: github.event_name != 'pull_request'
run: |
cosign sign -y --key env://COSIGN_PRIVATE_KEY ${{ steps.registry_case.outputs.lowercase }}/${{ steps.build_image.outputs.image }}@${TAGS}
env:
TAGS: ${{ steps.push.outputs.digest }}
COSIGN_EXPERIMENTAL: false
COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }}
|
