satosa-saml-metadata with SAMLMirrorFrontend - Missing metadata

[github-canni]

Code Version

Satosa 8.2.0 (docker), running an saml2 mirror frontend and multiple oidc backends

Expected Behavior

• multiple frontend*.xml metadata files for each oidc backend
  or
• one frontend.xml with multiple entity descriptors for each oidc backend

Current Behavior

• only one frontend.xml with one entity descriptor will be generated
  (so no metadata for other mirrored oidc backends)

Steps to Reproduce

• trying to replicate saml2 to social logins

[rizlas]

Also in the docker-entrypoint.sh this part will fail if a saml2 backend is not defined, and for saml2 social logins a saml2 backend is not present.

touch backend.xml frontend.xml
satosa-saml-metadata proxy_conf.yaml backend.key backend.crt

echo -----BEGIN SAML2 BACKEND METADATA-----
xq -x 'del(."ns0:EntityDescriptor"."ns1:Signature")' backend.xml | tee backend.xml.new
echo -----END SAML2 BACKEND METADATA----

This error is triggered cause backend.xml is 0 byte.

-----BEGIN SAML2 BACKEND METADATA-----
xq: Error running jq: ExpatError: no element found: line 1, column 0.