Added docker swarm support, updated README

Author: Umkus

Diff for: Dockerfile

@@ -1,4 +1,5 @@
-FROM    centurylink/openssl as keys
+FROM    nginx:alpine
+RUN     apk add --no-cache openssl
 RUN     echo $'[req] \n\
 distinguished_name = req_distinguished_name \n\
 x509_extensions = v3_req \n\
@@ -12,9 +13,9 @@ subjectAltName = @alt_names \n\
 [alt_names] \n\
 DNS.1 = *.localhost \n\
 DNS.2 = localhost' > openssl.cnf
-RUN     openssl req -new -newkey rsa:2048 -sha1 -days 3650 -nodes -x509 -keyout cert.key -out cert.crt -config openssl.cnf
-
-FROM    nginx:alpine
+RUN     mkdir -p /run/secrets/
+RUN     openssl req -new -newkey rsa:2048 -sha1 -days 3650 -nodes -x509 -keyout /run/secrets/cert.key -out /run/secrets/cert.crt -config openssl.cnf
 COPY    . /etc/nginx/
-COPY    --from=keys cert.key /run/secrets/cert.key
-COPY    --from=keys cert.crt /run/secrets/cert.crt
+RUN     ln -sf /dev/stdout /var/log/nginx/bots.access.log
+RUN     rm openssl.cnf
+RUN     apk del openssl

Diff for: README.md

@@ -14,11 +14,11 @@ Awesome Nginx configuration template and a set of handy must-have snippets.
  * Various predefined locations
  * Advanced logging
  * SEO
- * Docker-ready
+ * Docker/Swarm ready
 
 ## Requirements
- * Docker
- * docker-compose
+ * `Docker` >= `1.13`
+ * `docker-compose` >= `3.1`
 
 Configs themselves depend on `Nginx` >= `1.9.5`, if used separately.
 
@@ -52,10 +52,43 @@ $ docker-compose exec nginx nginx -s reload
 ### Logs
 By default a new `logs/` directory should be created in the project directory, that directly maps to the nginx logs directory.
 
+#### Docker swarm
+To run in Docker swarm first make sure your Docker setup is in swarm mode:
+
+```bash
+$ docker swarm init
+```
+
+First of all you need to define your domain ssl certificate and key as a swarm secret:
+
+```bash
+$ docker secret create cert.crt your_certificate.crt
+$ docker secret create cert.key your_certificate_key.key
+```
+
+Now to start or update nginx (and php) services in the swarm run:
+
+```bash
+$ docker stack deploy -c docker-compose.yml --with-registry-auth --prune app
+```
+
+To see nginx logs run:
+```bash
+$ docker service logs -f app_nginx
+```
+
+To scale services:
+```bash
+$ docker service scale app_nginx=2 app_fpm=10
+```
+
+Now you can refresh the page a couple of times and notice different host names that your requests land on.
 
 ### Customization
 
 The main virtual host definition is located at `servers/main.conf`.
+Probably the best way to work with the repo is by cloning it and hooking up docker hub to automatically build a new image whenever there's new code.
+ 
 
 ## If something doesn't work
  * Check error and access logs

Diff for: docker-compose.yml

@@ -1,7 +1,7 @@
 version: '3.1'
 services:
     nginx:
-        hostname: ${HOST_NAME:-localhost}
+        hostname: localhost
         image: umkus/nginx-boilerplate
         ports:
             - 80:80