Use Buildah instead of Docker and build three times a month instead of every day

.github/workflows/os.yml

@@ -1,42 +1,32 @@
 name: os
 
-# This workflow uses actions that are not certified by GitHub.
-# They are provided by a third-party and are governed by
-# separate terms of service, privacy policy, and support
-# documentation.
-
 on:
   schedule:
-    - cron: '0 5 * * *'  # 5 am every day
+    - cron: '0 5 8,18,28 * *'
   push:
     paths:
-        - 'Dockerfile'
-        - 'etc/**'
-        - 'usr/**'
-        - 'repo/**'
+      - 'Dockerfile'
+      - 'etc/**'
+      - 'usr/**'
+      - 'repo/**'
+      - '.github/workflows/os.yml'
+  workflow_dispatch:
 
 env:
-  # Use docker.io for Docker Hub if empty
   REGISTRY: ghcr.io
-  # github.repository as <account>/<repo>
   IMAGE_NAME: ${{ github.repository }}
-  IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}
-
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
     permissions:
       contents: read
       packages: write
-      # This is used to complete the identity challenge
-      # with sigstore/fulcio when running outside of PRs.
-      id-token: write
+      id-token: write # Påkrævet til cosign keyless signering
 
     steps:
       - name: Maximize build space
-        uses: AdityaGarg8/remove-unwanted-software@v1
+        uses: AdityaGarg8/remove-unwanted-software@v5
         with:
           remove-dotnet: 'true'
           remove-android: 'true'
@@ -44,71 +34,62 @@ jobs:
 
       - name: Get current date
         id: date
-        run: echo "::set-output name=date::$(date +'%Y%m%d')"
-
-      - name: Test with environment variables
-        run: echo $DATE
-        env:
-          DATE: ${{ steps.date.outputs.date }}
+        run: echo "date=$(date +'%Y%m%d')" >> $GITHUB_OUTPUT
 
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
-      # Install the cosign tool except on PR
-      # https://github.com/sigstore/cosign-installer
-      - name: Install cosign
-        if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@6e04d228eb30da1757ee4e1dd75a0ec73a653e06 #v3.1.1
-        with:
-          cosign-release: 'v2.1.1'
-
-      # Workaround: https://github.com/docker/build-push-action/issues/461
-      - name: Setup Docker buildx
-        uses: docker/setup-buildx-action@79abd3f86f79a9d68a23c75a09a9a85889262adf
-
-      # Login against a Docker registry except on PR
-      # https://github.com/docker/login-action
-      - name: Log into registry ${{ env.REGISTRY }}
-        if: github.event_name != 'pull_request'
-        uses: docker/login-action@28218f9b04b4f3f62068d7b6ce6ca5b26e35336c
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      # Extract metadata (tags, labels) for Docker
-      # https://github.com/docker/metadata-action
       - name: Extract Docker metadata
         id: meta
-        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
+        uses: docker/metadata-action@v5
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          # Vi konstruerer tags her med branch-navnet som præfiks
+          tags: |
+            type=ref,event=branch
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=raw,value=${{ github.ref_name }}-10
+            type=raw,value=${{ github.ref_name }}-10.${{ steps.date.outputs.date }}
 
-      # Build and push Docker image with Buildx (don't push on PR)
-      # https://github.com/docker/build-push-action
-      - name: Build and push Docker image
-        id: build-and-push
-        uses: docker/build-push-action@ac9327eae2b366085ac7f6a2d02df8aa8ead720a
-        with:
-          context: .
-          push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.meta.outputs.tags }}, ${{ steps.meta.outputs.tags }}-10, ${{ steps.meta.outputs.tags }}-10.${{ steps.date.outputs.date }}
-       #   labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+      - name: Log into GHCR
+        if: github.event_name != 'pull_request'
+        run: |
+          buildah login -u ${{ github.actor }} -p ${{ secrets.GITHUB_TOKEN }} ${{ env.REGISTRY }}
 
+      - name: Build image with Buildah
+        id: build-image
+        run: |
+          # Vi bygger med 'raw-img' lokalt
+          buildah bud \
+            --label "org.opencontainers.image.source=https://github.com/${{ github.repository }}" \
+            -t raw-img .
 
-      # Sign the resulting Docker image digest except on PRs.
-      # This will only write to the public Rekor transparency log when the Docker
-      # repository is public to avoid leaking data.  If you would like to publish
-      # transparency data even for private images, pass --force to cosign below.
-      # https://github.com/sigstore/cosign
-      - name: Sign the published Docker image
-        if: ${{ github.event_name != 'pull_request' }}
-        env:
-          # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
-          TAGS: ${{ steps.meta.outputs.tags }}
-          DIGEST: ${{ steps.build-and-push.outputs.digest }}
-        # This step uses the identity token to provision an ephemeral certificate
-        # against the sigstore community Fulcio instance.
-        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}
+          # Gem det primære tag til signering (vi tager det første fra listen)
+          PRIMARY_TAG=$(echo "${{ steps.meta.outputs.tags }}" | head -n 1)
+          echo "primary_tag=$PRIMARY_TAG" >> $GITHUB_OUTPUT
+
+      - name: Push to GHCR
+        if: github.event_name != 'pull_request'
+        run: |
+          for tag in $(echo "${{ steps.meta.outputs.tags }}"); do
+            echo "Tagging and pushing: $tag"
+            buildah tag raw-img "$tag"
+            buildah push "$tag"
+          done
+
+      - name: Install cosign
+        if: github.event_name != 'pull_request'
+        uses: sigstore/cosign-installer@v3.3.0
+
+      # VI TILFØJER LOGIN TIL COSIGN HER
+      - name: Log into GHCR (Cosign)
+        if: github.event_name != 'pull_request'
+        run: |
+          cosign login ${{ env.REGISTRY }} -u ${{ github.actor }} -p ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Sign image
+        if: github.event_name != 'pull_request'
+        run: |
+          # Vi signerer det primære tag.
+          # Vi bruger --yes til at acceptere betingelserne automatisk.
+          cosign sign --yes "${{ steps.build-image.outputs.primary_tag }}"

Dockerfile

@@ -1,8 +1,4 @@
 FROM quay.io/almalinuxorg/atomic-desktop-kde:10
-ARG CACHEBUST=1
-
-# Get list of kernels from my repo. If the list has been updated, then the image will be rebuilt. If it hasn't been updated, then caching of the previous build will be used.
-ADD "https://copr.fedorainfracloud.org/api_3/build/list?ownername=andersrh&projectname=my-ostree-os&packagename=kernel" /tmp/builds.txt
 
 RUN echo 'omit_drivers+=" nouveau "' | tee /etc/dracut.conf.d/blacklist-nouveau.conf