Update Dockerfile with opencontainers labels

Dockerfile

@@ -1,6 +1,11 @@
 FROM python:3.9-slim
 
-LABEL org.opencontainers.image.authors="vero.valeros@gmail.com,eldraco@gmail.com"
+LABEL org.opencontainers.image.title="Zeek Anomaly Detector" \
+      org.opencontainers.image.description="This image runs the Zeek Anomaly Detector tool for network data analysis." \
+      org.opencontainers.image.version="0.1.0" \
+      org.opencontainers.image.created="2023-07-27" \
+      org.opencontainers.image.source="https://github.com/stratosphereips/zeek_anomaly_detector" \
+      org.opencontainers.image.authors="Veronica Valeros <vero.valeros@gmail.com>, Sebastian Garcia <eldraco@gmail.com>"
 
 ENV DEBIAN_FRONTEND=noninteractive
 ENV DESTINATION_DIR /zeek_anomaly_detector/