feat: add github actions build workflow

1 files changed, 158 insertions, 0 deletions

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..381ec83
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,158 @@
+---
+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:
+
+# The env variables starting with "ARG_" are described in the Containerfile of this repo.
+# Look there for options and explanations for their usage.
+# The values here are defaults and should be modified if using a different image, needing
+# nvidia, a specific nvidia driver, or a different Fedora version.
+env:
+  ARG_IMAGE_NAME: "silverblue"
+  ARG_IMAGE_SUFFIX: "main"
+  ARG_FEDORA_MAJOR_VERSION: "38"
+  ARG_NVIDIA_MAJOR_VERSION: ""
+  IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}
+
+jobs:
+  push-ghcr:
+    name: Build and push image
+    runs-on: ubuntu-22.04
+
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+
+    steps:
+      # Checkout push-to-registry action GitHub repository
+      - name: Checkout Push to Registry action
+        uses: actions/checkout@v3
+
+      - name: Generate tags
+        id: generate-tags
+        shell: bash
+        run: |
+          # Generate a timestamp for creating an image version history
+          TIMESTAMP="$(date +%Y%m%d)"
+          VARIANT="${{ env.ARG_FEDORA_MAJOR_VERSION }}"
+
+          COMMIT_TAGS=()
+          BUILD_TAGS=()
+
+          # Have tags for tracking builds during pull request
+          SHA_SHORT="${GITHUB_SHA::7}"
+          COMMIT_TAGS+=("pr-${{ github.event.number }}-${VARIANT}")
+          COMMIT_TAGS+=("${SHA_SHORT}-${VARIANT}")
+
+          COMMIT_TAGS+=("pr-${{ github.event.number }}")
+          COMMIT_TAGS+=("${SHA_SHORT}")
+
+          BUILD_TAGS=("${VARIANT}")
+
+          # Append matching timestamp tags to keep a version history
+          for TAG in "${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[*]}" >> $GITHUB_OUTPUT
+
+      - name: Get current version
+        id: labels
+        run: |
+          ver=$(skopeo inspect docker://ghcr.io/ublue-os/${{ env.ARG_IMAGE_NAME }}-${{ env.ARG_IMAGE_SUFFIX }}:${{ env.FEDORA_MAJOR_VERSION}}${{ env.NVIDIA_MAJOR_VERSION}} | jq -r '.Labels["org.opencontainers.image.version"]')
+          echo "VERSION=$ver" >> $GITHUB_OUTPUT
+
+      # Build metadata
+      - name: Image Metadata
+        uses: docker/metadata-action@v4
+        id: meta
+        with:
+          images: |
+            ${{ env.ARG_IMAGE_NAME }}-${{ env.ARG_IMAGE_SUFFIX }}-custom
+
+          labels: |
+            io.artifacthub.package.readme-url=https://raw.githubusercontent.com/${{ github.repository_owner }}/${{ github.repository_name }}/main/README.md
+            org.opencontainers.image.description=Customized ${{ env.ARG_IMAGE_NAME }}-${{ env.ARG_IMAGE_SUFFIX }} image.
+            org.opencontainers.image.title=${{ env.ARG_IMAGE_NAME }}-${{ env.ARG_IMAGE_SUFFIX }}
+            org.opencontainers.image.version=${{ steps.labels.outputs.VERSION }}
+
+      # 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: ${{ env.ARG_IMAGE_NAME }}-${{ env.ARG_IMAGE_SUFFIX }}-custom
+          tags: |
+            ${{ steps.generate-tags.outputs.alias_tags }}
+          build-args: |
+            IMAGE_NAME=${{ env.ARG_IMAGE_NAME }}
+            IMAGE_SUFFIX=${{ env.ARG_IMAGE_SUFFIX }}
+            FEDORA_MAJOR_VERSION=${{ env.ARG_FEDORA_MAJOR_VERSION }}
+            NVIDIA_MAJOR_VERSION=${{ env.ARG_NVIDIA_MAJOR_VERSION }}
+          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 }}
+
+      # Push the image to GHCR (Image Registry)
+      - name: Push 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