diff --git a/Dockerfile b/Dockerfile
index f8f76a1..4ef2c70 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,9 +6,15 @@ RUN apt-get update \
  && apt-get install -y -q --no-install-recommends \
     ca-certificates \
     wget \
+    cron \
  && apt-get clean \
  && rm -r /var/lib/apt/lists/*
 
+ENV AUTO_UPGRADE=1
+ENV LE_WORKING_DIR=/acme.sh
+ENV LE_CONFIG_HOME=/acmecerts
+RUN wget -O- https://get.acme.sh | sh
+
 # Configure Nginx and apply fix for very long server names
 RUN echo "daemon off;" >> /etc/nginx/nginx.conf \
  && sed -i 's/^http {/&\n    server_names_hash_bucket_size 128;/g' /etc/nginx/nginx.conf
@@ -30,5 +36,8 @@ ENV DOCKER_HOST unix:///tmp/docker.sock
 
 VOLUME ["/etc/nginx/certs"]
 
+VOLUME ["/acmecerts"]
+EXPOSE 443
+
 ENTRYPOINT ["/app/docker-entrypoint.sh"]
 CMD ["forego", "start", "-r"]
diff --git a/Procfile b/Procfile
index 29fe166..14b25ad 100644
--- a/Procfile
+++ b/Procfile
@@ -1,2 +1,4 @@
-dockergen: docker-gen -watch -notify "nginx -s reload" /app/nginx.tmpl /etc/nginx/conf.d/default.conf
+dockergen: docker-gen -watch -notify "/app/updatessl.sh updatessl" /app/nginx.tmpl /etc/nginx/conf.d/default.conf
 nginx: nginx
+cron: cron && tail -f /dev/null
+
diff --git a/README.md b/README.md
index 34ef8fb..a5858ed 100644
--- a/README.md
+++ b/README.md
@@ -149,7 +149,14 @@ Finally, start your containers with `VIRTUAL_HOST` environment variables.
     $ docker run -e VIRTUAL_HOST=foo.bar.com  ...
 ### SSL Support using letsencrypt
 
-[letsencrypt-nginx-proxy-companion](https://github.com/JrCs/docker-letsencrypt-nginx-proxy-companion) is a lightweight companion container for the nginx-proxy. It allow the creation/renewal of Let's Encrypt certificates automatically. 
+Just set `ENABLE_ACME` to `true`:
+
+```
+docker run -e VIRTUAL_HOST=foo.bar.com  -e ENABLE_ACME=true ...
+
+```
+
+It will generate the certs from letsencrypt and renew the cert in future automatically.
 
 ### SSL Support
 
diff --git a/nginx.tmpl b/nginx.tmpl
index a5b1d32..8a8de27 100644
--- a/nginx.tmpl
+++ b/nginx.tmpl
@@ -98,12 +98,22 @@ server {
 }
 {{ end }}
 
-{{ range $host, $containers := groupByMulti $ "Env.VIRTUAL_HOST" "," }}
+{{ range $host_list, $containers := groupBy $ "Env.VIRTUAL_HOST" }}
+{{ $sl := split $host_list "," }}
+{{ $host := index $sl 0 }}
 {{ $is_regexp := hasPrefix "~" $host }}
 {{ $upstream_name := when $is_regexp (sha1 $host) $host }}
+
+
 # {{ $host }}
 upstream {{ $upstream_name }} {
 {{ range $container := $containers }}
+
+{{ $enable_acme := eq (or ($container.Env.ENABLE_ACME) "") "true" }}
+{{ if $enable_acme }}
+#ACME_DOMAINS {{$host_list}}
+{{ end }}
+
 	{{ $addrLen := len $container.Addresses }}
 
 	{{ range $knownNetwork := $CurrentContainer.Networks }}
@@ -155,7 +165,7 @@ upstream {{ $upstream_name }} {
 
 {{ if eq $https_method "redirect" }}
 server {
-	server_name {{ $host }};
+	server_name {{ replace $host_list "," " " -1 }};
 	listen 80 {{ $default_server }};
 	{{ if $enable_ipv6 }}
 	listen [::]:80 {{ $default_server }};
@@ -166,7 +176,7 @@ server {
 {{ end }}
 
 server {
-	server_name {{ $host }};
+	server_name {{ replace $host_list "," " " -1 }};
 	listen 443 ssl http2 {{ $default_server }};
 	{{ if $enable_ipv6 }}
 	listen [::]:443 ssl http2 {{ $default_server }};
@@ -222,7 +232,7 @@ server {
 {{ if or (not $is_https) (eq $https_method "noredirect") }}
 
 server {
-	server_name {{ $host }};
+	server_name {{ replace $host_list "," " " -1 }};
 	listen 80 {{ $default_server }};
 	{{ if $enable_ipv6 }}
 	listen [::]:80 {{ $default_server }};
@@ -256,7 +266,7 @@ server {
 
 {{ if (and (not $is_https) (exists "/etc/nginx/certs/default.crt") (exists "/etc/nginx/certs/default.key")) }}
 server {
-	server_name {{ $host }};
+	server_name {{ replace $host_list "," " " -1 }};
 	listen 443 ssl http2 {{ $default_server }};
 	{{ if $enable_ipv6 }}
 	listen [::]:443 ssl http2 {{ $default_server }};
diff --git a/updatessl.sh b/updatessl.sh
new file mode 100755
index 0000000..f939967
--- /dev/null
+++ b/updatessl.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env sh
+
+_SCRIPT_="$0"
+
+ACME_BIN="/acme.sh/acme.sh --home /acme.sh --config-home /acmecerts"
+
+DEFAULT_CONF="/etc/nginx/conf.d/default.conf"
+
+
+CERTS="/etc/nginx/certs"
+
+
+updatessl() {
+
+  if grep ACME_DOMAINS $DEFAULT_CONF ; then
+    for d_list in $(grep ACME_DOMAINS $DEFAULT_CONF | cut -d ' ' -f 2);
+    do
+      d=$(echo "$d_list" | cut -d , -f 1)
+      $ACME_BIN --issue \
+      -d $d_list \
+      --nginx \
+      --fullchain-file "$CERTS/$d.crt" \
+      --key-file "$CERTS/$d.key" \
+      --reloadcmd "service nginx configtest && service nginx force-reload"
+    done
+
+    #generate nginx conf again.
+    docker-gen /app/nginx.tmpl /etc/nginx/conf.d/default.conf
+  else
+    echo "skip updatessl"
+  fi
+  service nginx configtest && service nginx force-reload
+}
+
+
+
+"$@"
+
+
+