diff --git a/caddy/Dockerfile b/caddy/Dockerfile
index c577f70..73f3bef 100644
--- a/caddy/Dockerfile
+++ b/caddy/Dockerfile
@@ -10,11 +10,12 @@ RUN curl https://getcaddy.com | bash -s personal net
 # Copy configs
 COPY net.conf  /root/net.conf
 
-#
+# Update config file with build variables
 RUN sed -i "s/FQDN_NAME_HERE/$ERISEDHOST/" /root/net.conf 
+RUN sed -i "s/EMAIL_ADDRESS_HERE/$ERISEDEMAIL/" /root/net.conf
 
 # Set CADDYPATH variable to point where certificates will be stored
 ENV CADDYPATH=/root/.caddy
 
 # Run caddy
-CMD  [ "caddy", "-type=net", "-agree", "-email", $ERISEDEMAIL, "-conf", "/root/net.conf" ]
+CMD  [ "caddy", "-type=net", "-agree", "-conf", "/root/net.conf" ]
diff --git a/caddy/README.md b/caddy/README.md
deleted file mode 100644
index 1f4dfb0..0000000
--- a/caddy/README.md
+++ /dev/null
@@ -1,4 +0,0 @@
-command to invoke net plugin:
-
-`sudo ./caddy -type=net -conf test.conf`
-
diff --git a/caddy/net.conf b/caddy/net.conf
index 4a82537..a3bbddb 100644
--- a/caddy/net.conf
+++ b/caddy/net.conf
@@ -1,3 +1,4 @@
 proxy :853 172.28.1.4:53 {
     host FQDN_NAME_HERE
+    tls  EMAIL_ADDRESS_HERE
 }