Add the caldav-calendar-sync.md guidelines

docs/caldav-calendar-sync.md

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+# CalDAV Calendar Sync
+
+This page will guide you through the local configuration of Baikal, an Open Source DAV server that can be used to test
+the CalDAV integration of Easy!Appointments.
+
+> Note: This guide refers to the available Docker development configuration using docker-compose.yml
+
+## Initial Setup
+
+By default, Baikal is configured to run on localhost:9000, so it can be accessed by opening the browser to this address.
+
+The first time the app is executed, it will display a small initial-configuration form that has to be submitted for
+Baikal to work.
+
+### First Configuration Page
+
+- The right time zone value needs to be selected for synchronization to match the information Easy!Appointments sends.
+- The "WebDAV authentication type" needs to be set to "Basic"
+- The default username is "admin", so the password for this development account could also be "admin" or something
+  similar (easy to remember)
+
+### Second Configuration Page
+
+- The default values can be submitted unless MySQL use is preferred (although totally optional).
+
+### Test User
+
+After the configuration is completed and Baikal works go to the "Users and resources" page and create a test user that
+will be used to sync with.
+
+## Enabling Sync
+
+After making sure that the local Baikal server works, Easy!Appointments will be able to connect to it and sync the
+appointment data.
+
+Baikal supports multiple user accounts, but for simplicity this guide will refer to the default account created during
+the initial setup.
+
+### Credentials
+
+While trying to enable the CalDAV sync from the Easy!Appointments calendar page, use the following credentials after
+clicking on "Enable Sync" > "CalDAV".
+
+- URL: http://localhost:9000/dav.php
+- Username: <from-previous-step>
+- Password: <from-previous-step>
+
+*This document applies to Easy!Appointments v1.4.3.*
+
+[Back](readme.md)

docs/readme.md

@@ -9,6 +9,7 @@ Welcome to the documentation pages of Easy!Appointments. Navigate through the av
 - [Console](console.md)
 - [Docker](docker.md)
 - [Google Calendar Sync](google-calendar-sync.md)
+- [CalDAV Calendar Sync](caldav-calendar-sync.md)
 - [FAQ](faq.md)
 
 *This document applies to Easy!Appointments v1.4.3.*