Replaced Docker Import with Skopeo copy

Docker `import` command works for archives but has an expectation of
flat filesystem tar. A rock when imported with `docker import` corrupts
the image but doesn't throw any errors.

.github/workflows/publish_edge.yaml

@@ -67,7 +67,7 @@ jobs:
             for tag in $TAGS; do
               echo "$tag"
               docker image ls -a
-              docker import ${{ steps.rockcraft.outputs.rock }} $tag
+              rockcraft.skopeo --insecure-policy copy oci-archive:${{ steps.rockcraft.outputs.rock }} docker-daemon:$tag
             done
             docker image ls -a
             sleep 10

.github/workflows/publish_hotfix.yaml

@@ -78,7 +78,7 @@ jobs:
             for tag in $TAGS; do
               echo "$tag"
               docker image ls -a
-              docker import ${{ steps.rockcraft.outputs.rock }} $tag
+              rockcraft.skopeo --insecure-policy copy oci-archive:${{ steps.rockcraft.outputs.rock }} docker-daemon:$tag
             done
             docker image ls -a
             sleep 10

.github/workflows/publish_release.yaml

@@ -68,7 +68,7 @@ jobs:
             for tag in $TAGS; do
               echo "$tag"
               docker image ls -a
-              docker import ${{ steps.rockcraft.outputs.rock }} $tag
+              rockcraft.skopeo --insecure-policy copy oci-archive:${{ steps.rockcraft.outputs.rock }} docker-daemon:$tag
             done
             docker image ls -a
             sleep 10