diff --git a/.gitea/workflows/container-images.yml b/.gitea/workflows/container-images.yml
index b375db9..df8a9a1 100644
--- a/.gitea/workflows/container-images.yml
+++ b/.gitea/workflows/container-images.yml
@@ -70,13 +70,13 @@ jobs:
           [[ "$REVISION" =~ ^[0-9a-f]{40}$ ]]
           docker build \
             --label "org.opencontainers.image.revision=$REVISION" \
-            --label "org.opencontainers.image.source=${{ gitea.server_url }}/${{ gitea.repository }}" \
+            --label "org.opencontainers.image.source=https://$REGISTRY/${{ gitea.repository }}" \
             --tag "$REGISTRY/$REGISTRY_OWNER/watermaps:$REVISION" \
             .
           docker build \
             --file deploy/route-data.Dockerfile \
             --label "org.opencontainers.image.revision=$REVISION" \
-            --label "org.opencontainers.image.source=${{ gitea.server_url }}/${{ gitea.repository }}" \
+            --label "org.opencontainers.image.source=https://$REGISTRY/${{ gitea.repository }}" \
             --tag "$REGISTRY/$REGISTRY_OWNER/watermaps-route-data:$REVISION" \
             .
 
@@ -117,7 +117,7 @@ jobs:
           docker build \
             --file deploy/release.Dockerfile \
             --build-arg "REVISION=$REVISION" \
-            --build-arg "SOURCE=${{ gitea.server_url }}/${{ gitea.repository }}" \
+            --build-arg "SOURCE=https://$REGISTRY/${{ gitea.repository }}" \
             --build-arg "APP_IMAGE=$app_image" \
             --build-arg "ROUTE_DATA_IMAGE=$route_data_image" \
             --tag "$REGISTRY/$REGISTRY_OWNER/watermaps-release:$REVISION" \