stabilization intermediate check-in

postfix/entrypoint.sh

@@ -1,7 +1,12 @@
 #!/usr/bin/env sh
 set -e
+# https://github.com/moby/moby/issues/31243
+chmod o+w /dev/stdout
 # https://serverfault.com/questions/1003885/postfix-in-docker-host-or-domain-name-not-found-dns-and-docker
 cp /etc/resolv.conf /var/spool/postfix/etc/resolv.conf
 postmap /etc/postfix/virtual
 postmap /etc/postfix/vmailbox
+postmap /etc/postfix/relay_clientcerts
+cp -r /etc/ssl/usr-local-share-ca-certificates/* /usr/local/share/ca-certificates/
+update-ca-certificates
 exec "$@"