diff --git a/README.md b/README.md
index c19123d..91a81b8 100644
--- a/README.md
+++ b/README.md
@@ -104,6 +104,9 @@ The aims is to provide a ready-to-run recipes that you can just copy, paste and
 - [Nginx-WebDav](apps/cloud/nginx-webdav.md)
 
 
+# Contacts - calendars
+- [Baikal](apps/contacts-calendars/baikal.md)
+
 
 # Cookbook
 - [NextCloud Cookbook](https://apps.nextcloud.com/apps/cookbook) 🔗 - quite good. Can import from URL (some pages), but manually editing longer recipes is a bit of a pain (you need to add and paste every single ingredient & preparation step one-by-one).
diff --git a/apps/contacts-calendars/baikal.md b/apps/contacts-calendars/baikal.md
new file mode 100644
index 0000000..b538c58
--- /dev/null
+++ b/apps/contacts-calendars/baikal.md
@@ -0,0 +1,74 @@
+# Baikal
+
+lightweight CalDAV+CardDAV server. It offers an extensive web interface with easy management of users, address books and calendars. It is fast and simple to install and only needs a basic php capable server. The data can be stored in a MySQL or a SQLite database.
+
+<br>
+
+- [Github repo](https://github.com/ckulka/baikal-docker)
+- [Homepage](https://sabre.io/baikal/)
+
+## docker-compose
+
+```yml
+---
+services:
+  baikal:
+    image: ckulka/baikal:nginx
+    depends_on:
+      - baikal-db
+    restart: unless-stopped
+    ports:
+      - "8456:80"
+    volumes:
+      - ./config:/var/www/baikal/config
+      - ./Specific:/var/www/baikal/Specific
+    networks:
+      - baikal-network
+
+  baikal-db:
+    image: mariadb:latest
+    restart: unless-stopped
+    volumes:
+      - ./mysql-data:/var/lib/mysql
+      - ./mysql:/etc/mysql/conf.d
+    ports:
+      - "4406:3306"
+    environment:
+      - MYSQL_ROOT_PASSWORD=rootpassword
+      - MYSQL_DATABASE=baikal-db
+      - MYSQL_USER=user
+      - MYSQL_PASSWORD=password
+    networks:
+      - baikal-network
+
+networks:
+ baikal-network:
+```
+
+## Tips & tricks
+
+### Create and chown  the mounting folders before running docker-compose up
+
+`mkdir -p config Specific`
+
+And
+
+`chown -R 101:101 config Specific`
+
+
+
+### Create admin and users(s)
+
+From the web panel setup admin and auth method
+
+Enable mysql
+
+And under database host fill the host lan IP with the database port as mapped in the docker-compose  e.g. 192.168.1.24:4406
+
+Then create a user
+
+### Android caldav carddav client
+
+On DAVx5 use Base URL: /dav.php/ 
+
+(e.g. https://server.example/dav.php/)