Add basic docs for the docker container

docs/using_zigbee_home_container.md

@@ -0,0 +1,39 @@
+# Using Zigbee Home Container
+
+## Building the Docker Image
+
+To build the Docker image, use the following command:
+```sh
+docker buildx build -t ncs-builder .
+```
+
+### For Mac M1 Users
+
+If you are using a Mac with an M1 chip, use this command to build the image for the appropriate platform:
+```sh
+docker buildx build --platform=linux/amd64 -t ncs-builder .
+```
+
+### Custom Toolchain or Zigbee Home Versions
+
+If you need to specify custom toolchain or Zigbee Home versions, use the following command:
+```sh
+docker buildx build --platform=linux/amd64 --build-arg toolchain_version=v2.6.1 --build-arg sdk_nrf_branch=v2.6.1 -t ncs-builder:v2.6.1 --build-arg zigbee_home_version=develop .
+```
+
+## Building an Example Using the Docker Image
+
+1. Navigate to the examples folder:
+    ```sh
+    cd examples
+    ```
+
+2. Run the Docker container:
+    ```sh
+    docker run --rm -v .:/workdir/examples -ti --platform linux/amd64 ncs-builder
+    ```
+
+3. The container will start an interactive shell. Use it to navigate to the desired example and then run:
+    ```sh
+    zigbee_home firmware build
+    ```