text updates

README.md

@@ -43,7 +43,7 @@ When you unpack the code from Git:
 - Create a directory where you will place server config file and copy **otp_config-template.php** there
   using a name of your choice; this file contains access details to the OTP database and it must be read by the server,
   but should not be placed within the web-server directory, in case a problem with your PHP could lead to exposure.
-- In the config directory, copy **config-template.php** to **config.php** and put in the location of the otp_server config file.
+- In the config directory, copy `config-template.php` to `config.php` and put in the location of the otp_server config file.
 - Configure your httpd server to be able to execute otp_server.php
 
 ### Using Docker
@@ -54,9 +54,32 @@ resolution based on the host machine and standard port 80 for connections.
 - You need docker instaled on your host machine
 - If you do not want to use **--network host** option then decide which port will be mapped to your Docker image (say 8080)
 - Download the code from git
+- In the **config** directory, copy **config-template.php** to **config.php**; do not modify the settings
+- In the **otp_server_config** directory copy **otp_config-template.php** to **otp_confi.php** and modify the settings as needed
 - As root run **docker build -t otp_server:latest .**
 - As root run **docker run -d --name otp_server --network host --rm   otp_server:latest**
 
+### Running the dosker image at boot
+For systems using systemctl we suggest to install the new service called 
+
+```
+[Unit]
+Description=TOTP server for eduGAN technical site
+After=docker.service
+Requires=docker.service
+
+[Service]
+TimeoutStartSec=0
+Restart=always
+ExecStartPre=-/usr/bin/docker stop otp_server
+ExecStartPre=-/usr/bin/docker rm otp_server
+ExecStart=/usr/bin/docker run --rm --name otp_server --network host otp_server:latest
+ExecStop=/usr/bin/docker stop -t 2 otp_server
+
+[Install]
+WantedBy=multi-user.target
+```
+
 ## Testing
 
 From the main technical site run:
@@ -69,3 +92,5 @@ curl -o otp.out http://otp_server_address/otp_server.php?user=xxx@example.com
 
 Your otp.out should contain value "-1" which means - the user not found. 
 If this works then you are ready to go.
+
+