Split jobs for each container files (#49)

Follow and fix #48

I don't know why buildah can take multiple container files for one image... 🤔

.github/workflows/containers.yml

@@ -16,24 +16,60 @@ on:
   workflow_dispatch:
 
 jobs:
-  build_and_push:
+  get-meta:
     runs-on: ubuntu-22.04
-    timeout-minutes: 30
+    timeout-minutes: 5
+    outputs:
+      started_at: ${{ steps.timestamp.outputs.started_at }}
     steps:
       - name: Get started timestamp
-        id: get-meta
+        id: timestamp
         run: |
           # Do not use ":" delimiter as iso-8601/rfc-3339, it cannot be used in container tag
           echo "started_at=$(date --utc '+%Y%m%d-%H%M%S-%Z')" >> "$GITHUB_OUTPUT"
+  ubuntu-nix-sudoer:
+    needs: [get-meta]
+    runs-on: ubuntu-22.04
+    timeout-minutes: 30
+    steps:
       - uses: actions/checkout@v4
       - name: Build Image
         id: build-image
         uses: redhat-actions/buildah-build@7a95fa7ee0f02d552a32753e7414641a04307056 #v2.13
         with:
           image: ubuntu-nix-sudoer
-          tags: latest ${{ github.sha }} ${{ steps.get-meta.outputs.started_at }}
+          tags: latest ${{ github.sha }} ${{ needs.get-meta.outputs.started_at }}
           containerfiles: |
             ./images/ubuntu-nix-sudoer/Containerfile
+          build-args: |
+            username=user
+          oci: true
+      - name: Push To ghcr.io
+        id: push-to-ghcr
+        if: ${{ github.event_name != 'pull_request' }}
+        uses: redhat-actions/push-to-registry@5ed88d269cf581ea9ef6dd6806d01562096bee9c #v2.8
+        with:
+          image: ${{ steps.build-image.outputs.image }}
+          tags: ${{ steps.build-image.outputs.tags }}
+          registry: ghcr.io/${{ github.repository_owner }}
+          username: ${{ github.repository_owner }}
+          password: ${{ github.token }}
+      - name: Log outputs
+        if: ${{ github.event_name != 'pull_request' }}
+        run: echo "${{ toJSON(steps.push-to-ghcr.outputs) }}"
+  ubuntu-nix-systemd:
+    needs: [get-meta]
+    runs-on: ubuntu-22.04
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build Image
+        id: build-image
+        uses: redhat-actions/buildah-build@7a95fa7ee0f02d552a32753e7414641a04307056 #v2.13
+        with:
+          image: ubuntu-nix-systemd
+          tags: latest ${{ github.sha }} ${{ needs.get-meta.outputs.started_at }}
+          containerfiles: |
             ./images/ubuntu-nix-systemd/Containerfile
           oci: true
       - name: Push To ghcr.io