added labels for traceability

Dockerfile

@@ -1,6 +1,13 @@
 FROM ghcr.io/mlflow/mlflow:latest
+ARG BASE_IMAGE_DIGEST=unknown
+
+# Set a label with the base image digest for traceability
+LABEL base-image.digest="${BASE_IMAGE_DIGEST}" \
+    build-date="$(date -u +'%Y-%m-%dT%H:%M:%SZ')" \
+    maintainer="Brian Jensen"
 
 # Use --no-cache-dir to avoid storing pip cache in the image
-RUN pip install --no-cache-dir psycopg2-binary
+RUN pip install --no-cache-dir \
+    psycopg2-binary
 
 ENTRYPOINT [ "mlflow", "server" ]