Fix podman create command to use correct image name.

.gitea/workflows/build.yaml

@@ -27,7 +27,7 @@ jobs:
       - run: podman build --tag "$IMAGE_NAME" --file docs/Dockerfile --storage-opt "overlay.mount_program=/usr/bin/fuse-overlayfs" .
       - run: podman push "$IMAGE_NAME"
       - run: mkdir borgmatic-docs
-      - run: docs_container_id=$(podman create borgmatic-docs)
+      - run: docs_container_id=$(podman create "$IMAGE_NAME")
       - run: podman cp $docs_container_id:/usr/share/nginx/html - > borgmatic-docs-dump.tar
       - run: tar xf borgmatic-docs-dump.tar
       - run: mv html borgmatic-docs