try to build multiarch with buildah

.gitea/workflows/container.yaml

@@ -1,19 +1,25 @@
 name: Gitea Actions Demo
 run-name: ${{ gitea.actor }} is testing out Gitea Actions 🚀
 on: [push]
-
 jobs:
   Explore-Gitea-Actions:
     runs-on: ubuntu-latest
     steps:
-      - run: echo "🎉 The job was automatically triggered by a ${{ gitea.event_name }} event."
-      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by Gitea!"
-      - run: echo "🔎 The name of your branch is ${{ gitea.ref }} and your repository is ${{ gitea.repository }}."
       - name: Check out repository code
         uses: actions/checkout@v3
       - run: echo "💡 The ${{ gitea.repository }} repository has been cloned to the runner."
-      - run: echo "🖥️ The workflow is now ready to test your code on the runner."
-      - name: List files in the repository
-        run: |
-          ls ${{ gitea.workspace }}
-      - run: echo "🍏 This job's status is ${{ job.status }}."
+      - name: Build image
+        id: build-image
+        uses: redhat-actions/buildah-build@v2
+        with:
+          image: docker.io/thallian/alpine-s6
+          tags: ${{ gitea.ref_name }} latest
+          archs: amd64
+          containerfiles: |
+            ./Containerfile
+      - name: Log in to Dockerhub
+        uses: redhat-actions/podman-login@v1
+        with:
+          registry: docker.io
+          username: ${{ secrets.DOCKERHUB_USER }}
+          password: ${{ secrets.DOCKERHUB_PW }}