removed rechunk an switched to docker build

.gitea/workflows/build.yml

@@ -1,14 +1,16 @@
 name: Build container image
 
 on:
+  pull_request:
+    branches:
+      - main
   schedule:
     - cron: '05 12 * * 2,5'
   workflow_dispatch:
 
 env:
   IMAGE_DESC: "Custom Fedora bootc image"
-  IMAGE_NAME: "fluffy-pancake"
-  IMAGE_REGISTRY: "humocs-man.duckdns.org/${{ github.repository_owner }}"
+  IMAGE_NAME: "${{ github.event.repository.name }}"
   DEFAULT_TAG: "stable"
 
 concurrency:
@@ -26,18 +28,16 @@ jobs:
       id-token: write
 
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Install Podman & Tools
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y podman jq curl
-
       - name: Prepare environment
         run: |
-          echo "IMAGE_REGISTRY=${IMAGE_REGISTRY,,}" >> ${GITHUB_ENV}
-          echo "IMAGE_NAME=${IMAGE_NAME,,}" >> ${GITHUB_ENV}
+          # Extrahiert die reine Domain/Host (inkl. Port, falls vorhanden) aus der Gitea-URL
+          REGISTRY_HOST=$(echo "${{ github.server_url }}" | awk -F/ '{print $3}')
+          OWNER_LOWER="${{ github.repository_owner }}"
+          NAME_LOWER="${{ env.IMAGE_NAME }}"
+
+          echo "REGISTRY_HOST=${REGISTRY_HOST}" >> ${GITHUB_ENV}
+          echo "IMAGE_REGISTRY=${REGISTRY_HOST}/${OWNER_LOWER,,}" >> ${GITHUB_ENV}
+          echo "IMAGE_NAME=${NAME_LOWER,,}" >> ${GITHUB_ENV}
 
       - name: Determine image tag
         run: |
@@ -51,6 +51,12 @@ jobs:
             echo "IS_TEST_BUILD=true" >> ${GITHUB_ENV}
           fi
 
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Image Metadata
         uses: docker/metadata-action@v5
         id: metadata
@@ -59,10 +65,15 @@ jobs:
             type=raw,value=${{ env.IMAGE_TAG }}
             type=raw,value=${{ env.IMAGE_TAG }}.{{date 'YYYYMMDD'}},enable=${{ env.IS_TEST_BUILD == 'false' }}
             type=raw,value={{date 'YYYYMMDD'}},enable=${{ env.IS_TEST_BUILD == 'false' }}
+            type=sha,enable=${{ github.event_name == 'pull_request' }}
+            type=ref,event=pr
           labels: |
             org.opencontainers.image.created={{date 'YYYY-MM-DDTHH:mm:ssZ'}}
             org.opencontainers.image.description=${{ env.IMAGE_DESC }}
+            org.opencontainers.image.documentation=${{ github.server_url }}/${{ github.repository }}/raw/commit/${{ github.sha }}/README.md
+            org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}/src/commit/${{ github.sha }}/Containerfile
             org.opencontainers.image.title=${{ env.IMAGE_NAME }}
+            org.opencontainers.image.url=${{ github.server_url }}/${{ github.repository }}
             org.opencontainers.image.vendor=${{ github.repository_owner }}
             org.opencontainers.image.version=${{ env.IMAGE_TAG }}.{{date 'YYYYMMDD'}}
             containers.bootc=1
@@ -70,77 +81,35 @@ jobs:
           sep-tags: " "
           sep-annotations: " "
 
-      - name: Build Image
-        env:
-          # Diese beiden Variablen sind der Schlüssel für den unprivilegierten Host
-          STORAGE_DRIVER: vfs
-          PODMAN_USERNS: keep-id
-        run: |
-          podman build \
-            -f ./Containerfile \
-            -t "localhost/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}" \
-            --storage-driver=vfs \
-            --label "org.opencontainers.image.title=${{ env.IMAGE_NAME }}" \
-            --label "org.opencontainers.image.description=${{ env.IMAGE_DESC }}" \
-            --label "org.opencontainers.image.vendor=${{ github.repository_owner }}" \
-            --label "containers.bootc=1" \
-            --label "ostree.bootable=1" \
-            .
-
-      - name: Rechunk with chunkah
-        run: |
-          set -euo pipefail
-
-          IMG="localhost/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}"
-          CHUNKED_IMG="localhost/${{ env.IMAGE_NAME }}-chunked:${{ env.IMAGE_TAG }}"
-
-          CONFIG=$(podman inspect "$IMG" | jq -c .[0])
-
-          CHUNKAH_CF=$(mktemp)
-          curl -sL https://github.com/coreos/chunkah/releases/download/v0.5.0/Containerfile.splitter -o "$CHUNKAH_CF"
-
-          podman build --skip-unused-stages=false \
-            -f "$CHUNKAH_CF" \
-            --from "$IMG" \
-            --build-arg CHUNKAH_CONFIG_STR="$CONFIG" \
-            --build-arg "CHUNKAH_ARGS=--prune /sysroot/ --max-layers 128 --compressed --label ostree.commit- --label ostree.final-diffid- --label ostree.bootable=true --label containers.bootc=1" \
-            -t "$CHUNKED_IMG" \
-            .
-
-          rm -f "$CHUNKAH_CF"
-          podman rmi "$IMG"
-
-          for full_tag in ${{ steps.metadata.outputs.tags }}; do
-            tag_only="${full_tag##*:}"
-            podman tag "$CHUNKED_IMG" "localhost/${{ env.IMAGE_NAME }}:${tag_only}"
-          done
-          podman rmi "$CHUNKED_IMG"
-
       - name: Login to Gitea Container Registry
-        run: |
-          podman login -u "${{ github.actor }}" -p "${{ secrets.GITHUB_TOKEN }}" humocs-man.duckdns.org
+        uses: docker/login-action@v3
+        if: github.event_name != 'pull_request'
+        with:
+          registry: ${{ env.REGISTRY_HOST }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Push to Gitea Registry
-        run: |
-          for full_tag in ${{ steps.metadata.outputs.tags }}; do
-            tag_only="${full_tag##*:}"
-            LOCAL_TAG="localhost/${{ env.IMAGE_NAME }}:${tag_only}"
-            REMOTE_TAG="${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}:${tag_only}"
-
-            podman tag "$LOCAL_TAG" "$REMOTE_TAG"
-            podman push "$REMOTE_TAG"
-          done
-
-          DIGEST=$(podman inspect "${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}" | jq -r '.[0].Digest')
-          echo "IMAGE_DIGEST=$DIGEST" >> $GITHUB_ENV
+      - name: Build and Push Image
+        uses: docker/build-push-action@v6
+        id: build_image
+        with:
+          context: .
+          file: ./Containerfile
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.metadata.outputs.tags }}
+          labels: ${{ steps.metadata.outputs.labels }}
+          # Nutzt das Actions Cache-System deines Gitea Runners
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@v3
+        uses: sigstore/cosign-installer@v4.1.2
+        if: github.event_name != 'pull_request'
 
       - name: Sign container image
-        if: env.IS_TEST_BUILD == 'false'
+        if: github.event_name != 'pull_request' && env.IS_TEST_BUILD == 'false'
         run: |
-          cosign sign -y --tlog-upload=false --key env://COSIGN_PRIVATE_KEY "${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}@${{ env.IMAGE_DIGEST }}"
+          cosign sign -y --key env://COSIGN_PRIVATE_KEY "${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build_image.outputs.digest }}"
         env:
           COSIGN_EXPERIMENTAL: false
           COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }}