Try to fix multi-arch build

.drone.yml

@@ -19,10 +19,12 @@ steps:
         RESTIC_VERSION=$$(grep RESTIC_VERSION= Dockerfile|cut -d = -f 2)
         podman login --username "$${REGISTRY_USERNAME}" --password "$${REGISTRY_PASSWORD}" "$${REGISTRY_SERVER}"
         echo "== Building $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA}"
-        podman build --platform linux/arm64 --platform linux/amd64 --pull-always --format docker -t $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA} .
+        podman manifest create $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA}
+        podman build --platform linux/arm64,linux/amd64 --pull-always --manifest $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA} .
+        podman manifest inspect $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA}
         echo "== Publishing $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA}"
-        podman push $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA} docker://$${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA}
-        podman push $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA} docker://$${RELEASE_IMAGE_NAME}:$${RESTIC_VERSION}
+        podman manifest push $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA} docker://$${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA}
+        podman manifest push $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA} docker://$${RELEASE_IMAGE_NAME}:$${RESTIC_VERSION}
         podman logout "$${REGISTRY_SERVER}"
     volumes:
       - name: containers
@@ -72,31 +74,13 @@ steps:
       REGISTRY_SERVER: "docker.io"
       RELEASE_IMAGE_NAME: "docker.io/genunix/restic"
     commands:
-      - podman login --username "$${REGISTRY_USERNAME}" --password "$${REGISTRY_PASSWORD}" "$${REGISTRY_SERVER}"
+      - skopeo login --username "$${REGISTRY_USERNAME}" --password "$${REGISTRY_PASSWORD}" "$${REGISTRY_SERVER}"
       - echo "== Promoting $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA} into production"
-      - podman pull docker://$${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA}
-      - podman push $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA} docker://$${RELEASE_IMAGE_NAME}:latest
-      - podman logout "$${REGISTRY_SERVER}"
+      - skopeo copy --preserve-digests --multi-arch all docker://$${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA} docker://$${RELEASE_IMAGE_NAME}:latest
     volumes:
       - name: containers
         path: /var/lib/containers
 
-  - name: cleanup
-    image: mgoltzsche/podman:5.3.1
-    privileged: true
-    environment:
-      RELEASE_IMAGE_NAME: "docker.io/genunix/restic"
-    commands:
-      - podman rmi -f $${RELEASE_IMAGE_NAME}:$${DRONE_COMMIT_SHA}
-      - podman rmi -f $${RELEASE_IMAGE_NAME}:latest
-      - podman image prune -f
-    volumes:
-      - name: containers
-        path: /var/lib/containers
-    when:
-      branch:
-        - master
-
 trigger:
   event:
   - promote