Add DNS-01 challenge support with configuration files and scripts

data/Dockerfiles/acme/Dockerfile

@@ -29,6 +29,7 @@ COPY acme.sh /srv/acme.sh
 COPY functions.sh /srv/functions.sh
 COPY obtain-certificate.sh /srv/obtain-certificate.sh
 COPY obtain-certificate-dns.sh /srv/obtain-certificate-dns.sh
+COPY load-dns-config.sh /srv/load-dns-config.sh
 COPY reload-configurations.sh /srv/reload-configurations.sh
 COPY expand6.sh /srv/expand6.sh