stabilization intermediate check-in

postfix/Dockerfile

@@ -10,6 +10,7 @@ apt-get autoclean
 rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* ~/.cache ~/.npm
 EOF
 COPY etc/postfix/ /etc/postfix/
+COPY etc/ssl/ /etc/ssl/
 COPY --chmod=0775 entrypoint.sh /entrypoint.sh
 EXPOSE 25
 VOLUME /var/spool/postfix