diff --git a/doc/docker_build.md b/doc/docker_build.md
index edb65be..c0f46d9 100644
--- a/doc/docker_build.md
+++ b/doc/docker_build.md
@@ -12,7 +12,7 @@ No need to install ESP-IDF or anything else. All commands should be run in proje
 ### Start an interactive IDF environnement
 In this interactive shell you can run menuconfig, build, flash and monitor command. 
 ```
-docker run --rm -it -v .:/project -w /project -v /dev:/dev --privileged espressif/idf:v4.3.5
+docker run --rm -it -v .:/project -w /project -v /dev:/dev --privileged espressif/idf:v5.1.1
 ```
 
 ### Configure
@@ -37,12 +37,12 @@ Exit docker interactive shell: `exit`
 If you want to execute a specific command or to generate a reusable .bin file. 
 ### menuconfig
 ```
-docker run --rm -it -v .:/project -w /project espressif/idf:v4.3.5 idf.py menuconfig
+docker run --rm -it -v .:/project -w /project -v /dev:/dev --privileged espressif/idf:v5.1.1 idf.py menuconfig
 ```
 
 ### Build
 ```
-docker run --rm -it -v .:/project -w /project espressif/idf:v4.3.5 idf.py build
+docker run --rm -it -v .:/project -w /project -v /dev:/dev --privileged espressif/idf:v5.1.1 idf.py build
 ```
 
 ### Flash
@@ -50,9 +50,24 @@ Mapping of serial port to container is not simple in windows but you can merge a
  - [ESP Tool web flasher](https://espressif.github.io/esptool-js/)
  - [ESP32 Flash Download tool](https://www.espressif.com/en/support/download/other-tools)
 
+On MacOS / Linux  you need to install a small python package, make sure that pip is installed on your machine: 
+
+```
+pip install esptool
+```
+After installation you can start the SerialServer with this command: 
+```
+esp_rfc2217_server.py -v -p 4000 dev/serialDevice
+```
+
+Create now a new terminal run the docker container and flash it using this command: 
+```
+idf.py --port 'rfc2217://host.docker.internal:4000?ign_set_control' flash monitor
+```
+
 #### Merge bins into single firmware bin file
 ```
-docker run --rm -it -v .:/project -w /project/build espressif/idf:v4.3.1    //runs terminal in idf container
+docker run --rm -it -v .:/project -w /project -v /dev:/dev --privileged espressif/idf:v5.1.1   //runs terminal in idf container
 
 esptool.py --chip esp32 merge_bin --output firmware.bin @flash_args         // merges all bin files into firmware.bin
 ```