switch to podman instead of buildah

.forgejo/workflows/os.yml

@@ -61,13 +61,13 @@ jobs:
       - name: Log into Forgejo Container Registry
         if: github.event_name != 'pull_request'
         run: |
-          buildah --storage-driver=vfs login -u ${{ github.actor }} -p ${{ secrets.PACKAGE_TOKEN }} ${{ env.REGISTRY }}
+          podman login -u ${{ github.actor }} -p ${{ secrets.PACKAGE_TOKEN }} ${{ env.REGISTRY }}
 
       - name: Build image with Buildah
         id: build-image
         run: |
           # Vi bygger med 'raw-img' lokalt
-          buildah --storage-driver=vfs bud \
+          podman build \
             --label "org.opencontainers.image.source=https://forge.pc-rytteren.dk/${{ github.repository }}" \
             -t raw-img .
 
@@ -80,8 +80,8 @@ jobs:
         run: |
           for tag in $(echo "${{ steps.meta.outputs.tags }}"); do
             echo "Tagging and pushing: $tag"
-            buildah --storage-driver=vfs tag raw-img "$tag"
-            buildah --storage-driver=vfs push "$tag"
+            podman tag raw-img "$tag"
+            podman push "$tag"
           done
 
       - name: Install cosign