+The <i>single_host</i> examples use self-signed SSL certificates, which are deployed using the same mechanism used to deploy custom certificates.
+
+{% include 'install_custom_certificates' %}
+
+If you want to use valid certificates provided by Let's Encrypt, please set the variable <i>USE_LETSENCRYPT=yes</i> and make sure that all the FQDNs that you will use for the public-facing applications (API/controller, Workbench, Keepproxy/Keepweb) are reachable.
+