add acme.sh to support auto ssl

Dockerfile

@@ -6,9 +6,12 @@ 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/*
 
+RUN AUTOUPGRADE=1 LE_WORKING_DIR=/acme.sh LE_CONFIG_HOME /acmecerts 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 +33,7 @@ ENV DOCKER_HOST unix:///tmp/docker.sock
 
 VOLUME ["/etc/nginx/certs"]
 
+VOLUME ["/acmecerts"]
+
 ENTRYPOINT ["/app/docker-entrypoint.sh"]
 CMD ["forego", "start", "-r"]

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
+

nginx.tmpl

@@ -103,6 +103,11 @@ server {
 {{ $host := index $sl 0 }}
 {{ $is_regexp := hasPrefix "~" $host }}
 {{ $upstream_name := when $is_regexp (sha1 $host) $host }}
+
+{{ $enable_acme := eq (or ($.Env.ENABLE_ACME) "") "true" }}
+{{ if $enable_acme }}
+#{{ACMD_DOMAINS $host_list}}
+{{ end }}
 # {{ $host }}
 upstream {{ $upstream_name }} {
 {{ range $container := $containers }}
@@ -159,6 +164,7 @@ upstream {{ $upstream_name }} {
 server {
 	server_name {{ replace $host_list "," " " -1 }};
 	listen 80 {{ $default_server }};
+#location ^~ /.well-known/acme-challenge/ {default_type "text/plain";root html;} location = /.well-known/acme-challenge/ {try_files $uri =404;} #acme
 	{{ if $enable_ipv6 }}
 	listen [::]:80 {{ $default_server }};
 	{{ end }}
@@ -226,6 +232,7 @@ server {
 server {
 	server_name {{ replace $host_list "," " " -1 }};
 	listen 80 {{ $default_server }};
+#location ^~ /.well-known/acme-challenge/ {default_type "text/plain";root html;} location = /.well-known/acme-challenge/ {try_files $uri =404;} #acme
 	{{ if $enable_ipv6 }}
 	listen [::]:80 {{ $default_server }};
 	{{ end }}

updatessl.sh

@@ -0,0 +1,50 @@
+#!/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"
+
+NGINX_HOME="/etc/nginx"
+
+CERTS="/etc/nginx/certs"
+
+
+updatessl() {
+
+  for d_list in $(grep ACMD_DOMAINS $DEFAULT_CONF | cut -d ' ' -f 2);
+  do
+    d=$(echo "$d_list" | cut -d , -f 1)
+    $ACME_BIN --issue \
+    -d $d_list \
+    -w $NGINX_HOME/html \
+    --pre-hook "$_SCRIPT_ pre_hook $DEFAULT_CONF" \
+    --post-hook "$_SCRIPT_ post_hook $DEFAULT_CONF" \
+    --fullchain-file "$CERTS\$d.crt" \
+    --key-file "$CERTS\$d.crt" \
+    --reloadcmd "service nginx configtest && service force-reload"
+  done
+
+  #generate nginx conf again.
+  docker-gen /app/nginx.tmpl /etc/nginx/conf.d/default.conf
+  service nginx configtest && service force-reload
+}
+
+
+
+pre_hook() {
+  _d_conf="$1"
+  sed -i "s|#\(location.*#acme\)|\\1|" $_d_conf && service nginx configtest && service force-reload
+}
+
+post_hook() {
+  _d_conf="$1"
+  sed -i "s|\(location.*#acme\)|#\\1|"  $_d_conf 
+}
+
+
+"$@"
+
+
+