docker: add metadata labels

Author: mdonadoni

CHANGES.rst

@@ -4,6 +4,7 @@ Changes
 Version 0.9.2 (UNRELEASED)
 --------------------------
 
+- Adds metadata labels to Dockerfile.
 - Fixes container image building on the arm64 architecture.
 
 Version 0.9.1 (2023-09-27)

Dockerfile

@@ -55,3 +55,15 @@ RUN pip check
 # Set useful environment variables
 ENV PYTHONPATH=/workdir \
     TERM=xterm
+
+# Set image labels
+LABEL org.opencontainers.image.authors="team@reanahub.io"
+LABEL org.opencontainers.image.created="2023-12-12"
+LABEL org.opencontainers.image.description="REANA reproducible analysis platform - CWL workflow engine component"
+LABEL org.opencontainers.image.documentation="https://reana-workflow-engine-cwl.readthedocs.io/"
+LABEL org.opencontainers.image.licenses="MIT"
+LABEL org.opencontainers.image.source="https://github.com/reanahub/reana-workflow-engine-cwl"
+LABEL org.opencontainers.image.title="reana-workflow-engine-cwl"
+LABEL org.opencontainers.image.url="https://github.com/reanahub/reana-workflow-engine-cwl"
+LABEL org.opencontainers.image.vendor="reanahub"
+LABEL org.opencontainers.image.version="0.9.2"