Add tag installs

docs/index.md

@@ -603,6 +603,16 @@ $ git clone https://github.com/janeczku/calibre-web /var/www/calibre-web
 $ cd /var/www/calibre-web
 ```
 
+Then, looking at the [Calibre-web release page], we can choose a version we
+would like to install. As of November 2020, the latest version is 0.6.9, so
+we can check that version out with the following:
+
+```bash
+$ git fetch origin master -a
+$ git tag -l
+$ git checkout 0.6.9
+```
+
 We then need to install the Python dependencies with:
 
 ```bash
@@ -611,6 +621,7 @@ $ .venv/bin/pip install -r requirements.txt
 ```
 
 And finally configure the service to be run by Systemd.
+
 Create the file `/etc/systemd/system/cps.service` and add these lines to it:
 
 ```bash
@@ -638,6 +649,8 @@ We should also ensure that the correct ownership permissions are configured:
 $ chown -R www-data: /var/www/calibre-web
 ```
 
+[Calibre-web release page]: https://github.com/janeczku/calibre-web/releases
+
 ### Setup a new MOTD
 
 When you SSH into the Raspberry Pi, you can enable a nice welcome message.