Add .forgejo/workflows/container.yaml

Signed-off-by: xengi <forgejo@xengi.de>

.forgejo/workflows/container.yaml

@@ -0,0 +1,38 @@
+name: Build archlinux-aur container
+
+on:
+  push:
+  schedule:
+    - cron: '0 12 * * *'
+      timezone: Europe/Berlin
+  workflow_dispatch:
+
+enable-email-notifications: true
+
+env:
+  BUILDKITD_FLAGS: --oci-worker-no-process-sandbox
+  REGISTRY_URL: coderberg.org
+  REGISTRY_IMAGE: ${{ env.REGISTRY_URL }}/${{ env.FORGEJO_REPOSITORY }}/archlinux-aur
+  REGISTRY_TAG: latest
+
+jobs:
+  build:
+    runs-on: buildkit
+    name: Build archlinux-aur container
+    steps:
+      - name: Check out the repository
+        run: git clone ${{ env.FORGEJO_SERVER_URL }}/${{ env.FORGEJO_REPOSITORY }} .
+      - name: Setup buildkit
+        run: |
+          mkdir -p ~/.docker
+          echo "{\"auths\":{\"${{ env.REGISTRY_URL }}\":{\"username\":\"${{ env.FORGEJO_REPOSITORY_OWNER }}\",\"password\":\"${{ env.FORGEJO_TOKEN }}\"}}}" > ~/.docker/config.json
+      - name: Build container
+        run: |
+          export CREATED=$(date -Iseconds)
+          sed -i "s/%%CREATED%%/$CREATED/" docker/Dockerfile
+          sed -i "s/%%COMMIT%%/$CI_BUILD_REF_NAME/" docker/Dockerfile
+          buildctl-daemonless.sh build \
+            --frontend dockerfile.v0 \
+            --local context=docker/ \
+            --local dockerfile=docker/ \
+            --output type=image,name=${{ env.REGISTRY_IMAGE }}:${{ env.REGISTRY_TAG }},push=true