diff --git a/README.md b/README.md
index ba873a9..e96949a 100644
--- a/README.md
+++ b/README.md
@@ -2,20 +2,77 @@
 ModelSim Version 16 GUI Running under docker container
 
 ## Steps for Linux:
-First you need to exec the `xauth list` on your host terminal. The aprox result will be:
+First you need to exec the `xauth list` on your host terminal. The aprox result
+will be: <br/>
+`<hostname-of-machine>/unix: MIT-MAGIC-COOKIE-1 <some number here>` <br/>
+Then exec `echo $DISPLAY`. The result will be **:1** or **:0** <br/>
+Run the container with the following command: <br/>
+`sudo docker run -i -t --name modelsim --net=host -e DISPLAY -v /tmp/.X11-unix goldensniper/modelsim-docker bash`
 
-`<hostname-of-machine>/unix: MIT-MAGIC-COOKIE-1 <some number here>`
-  
-Then exec `echo $DISPLAY`. The result will be **:1** or **:0**
+Now inside the container exec the following command: <br/>
+`xauth add <hostname-of-machine>/unix:<no-of-display> MIT-MAGIC-COOKIE-1 <some number here>`
 
-Run the container with the following command:
+Where the third arg is the result of `xauth list` command on your host and 
+`<no-of-display>` is the **$DISPLAY** host machine value. <br/>
 
-`sudo docker run -i -t --name modelsim --net=host -e DISPLAY -v /tmp/.X11-unix goldensniper/modelsim-docker bash`
+Finally exec `vsim` and enjoy. :)
 
-Now inside the container exec the following command:
+Example: <br/>
+1. `xauth list` <br/>
+![sc](https://user-images.githubusercontent.com/43972902/129357595-3713e40a-62b0-493e-95b4-bf8a2b05dc44.png)
 
-`xauth add <hostname-of-machine>/unix:<no-of-display> MIT-MAGIC-COOKIE-1 <some number here>`
+2. `echo $DISPLAY` <br/>
+![2](https://user-images.githubusercontent.com/43972902/129357943-7abbab00-86a7-43b9-82b1-e22972e0e206.png)
 
-Where the third arg is the result of `xauth list` command on your host and `<no-of-display>` is the **$DISPLAY** host machine value.
+3. First usage modelsim docker command: <br/>
+`docker run -i -t --name modelsim --net=host -e DISPLAY -v /tmp/.X11-unix goldensniper/modelsim-docker bash` <br/>
+![3](https://user-images.githubusercontent.com/43972902/129358020-fb3d7812-ad52-4906-8705-07394ba3cb72.png)
 
-Finally exec `vsim` and enjoy. :)
+4. After running container set XServer: <br/>
+`xauth add mozerpol-pc/unix:0 MIT-MAGIC-COOKIE-1 fbcd4b1744cd112081823023de2e57ec` <br/>
+![3](https://user-images.githubusercontent.com/43972902/129358286-5d025787-94a4-4aff-bf79-9004408463c7.png)
+
+5. After this you should can run *vsim*: <br/>
+![4](https://user-images.githubusercontent.com/43972902/129358116-fc510cc4-7236-432f-9a15-cfb26f4ae898.png)
+
+## How to use modelsim with docker
+**How to run modelsim after installation:** <br/>
+1. List all containers and note ID: `docker ps -a` <br/>
+![1](https://user-images.githubusercontent.com/43972902/129359170-fcad70ab-2e8b-4eb3-aaa7-e4a6fdbbef3c.png)
+
+2. Run docker: `docker start 563bcbca514b` <br/>
+![2](https://user-images.githubusercontent.com/43972902/129359497-a6c24684-0e09-41ac-85fa-c9e4d05135f2.png)
+
+3. Run modelsim: `docker exec -it 563bcbca514b vsim` <br/>
+![q](https://user-images.githubusercontent.com/43972902/129359952-b831ac92-6590-4331-9cce-aad4bfcd3391.png) <br/>
+Now you can notice that container change their ID: <br/>
+![x](https://user-images.githubusercontent.com/43972902/129360141-bee778d0-35f5-4101-8903-770921d3fec4.png)
+
+4. If you want stop docker just: `docker stop 563bcbca514b`
+
+## How to pass files between host and docker
+**One file:** *docker cp file_name containerID:destination*: <br/> 
+`docker cp design.v 563bcbca514b:/design.v` <br/> 
+After this file *design.v* will appear in */* directory. <br/>
+**Folder:** *docker cp what containerId:destination*: <br/>
+`docker cp ./ 563bcbca514b:/target` <br/>
+After this I'll create a new folder *target* inside */* directory with files from
+host under *./* directory.
+
+More info 
+[here](https://stackoverflow.com/questions/22907231/how-to-copy-files-from-host-to-docker-container).
+
+After all it looks like this (just as a normal modelsim ;D) : <br/> 
+![s](https://user-images.githubusercontent.com/43972902/129363715-73a3a95d-299c-43e4-937a-181d300f5c9e.png)
+
+## Possible errors
+If you have error like this: 
+```shell
+root@mozerpol-pc:/home/mozerpol# docker exec -it 563bcbca514b vsim
+** Warning: setting ADDR_NO_RANDOMIZE failed - Operation not permitted.
+Invalid MIT-MAGIC-COOKIE-1 keyInvalid MIT-MAGIC-COOKIE-1 keyTk initialization failed: couldn't connect to display ":0".
+```
+
+To get rid this just run `xhost +local:`. <br/>
+Solution found
+[here](https://unix.stackexchange.com/questions/199891/invalid-mit-magic-cookie-1-key-when-trying-to-run-program-remotely).