docs(lib-builder): Improve UI and Docker image sections

Author: lucasssvaz

docs/en/lib_builder.rst

@@ -204,6 +204,47 @@ You can then run the UI using the following command:
 
     ./tools/config_editor/app.py
 
+Pre-Configuring the UI
+**********************
+
+The UI can be pre-configured using command line arguments. The following arguments are available:
+
+- ``-t, --target <target>``: Comma-separated list of targets to be compiled.
+  Choose from: *all*, *esp32*, *esp32s2*, *esp32s3*, *esp32c2*, *esp32c3*, *esp32c6*, *esp32h2*. Default: all except *esp32c2*;
+- ``--copy, --no-copy``: Enable/disable copying the compiled libraries to ``arduino-esp32``. Enabled by default;
+- ``-c, --arduino-path <path>``: Path to ``arduino-esp32`` directory. Default: OS dependent;
+- ``-A, --arduino-branch <branch>``: Branch of the ``arduino-esp32`` repository to be used. Default: set by the build script;
+- ``-I, --idf-branch <branch>``: Branch of the ``ESP-IDF`` repository to be used. Default: set by the build script;
+- ``-i, --idf-commit <commit>``: Commit of the ``ESP-IDF`` repository to be used. Default: set by the build script;
+- ``-D, --debug-level <level>``: Debug level to be set in ``ESP-IDF``.
+  Choose from: *default*, *none*, *error*, *warning*, *info*, *debug*, *verbose*. Default: *default*.
+
+Please note that all these options can be changed in the UI itself and are only used for automation purposes.
+
+Screens
+*******
+
+There are many screens in the UI that are used to configure the libraries to be compiled.
+Note that in all screens you can also use the shortcut keys shown in the footer bar to navigate.
+The UI consists of the following screens:
+
+- **Main Menu**: The main screen shows buttons to navigate to the other screens.
+- **Compile Screen**: The compile screen shows the output of the compilation process and any errors that may have occurred.
+- **Sdkconfig Editor**: The sdkconfig editor screen is a simple text editor that shows you the sdkconfig files that will be used for compilation.
+  You can edit the files here to customize the generated libraries.
+- **Settings Screen**: The settings screen allows you to change the settings of the compilation process. Here you can change:
+  - The targets that the libraries will be compiled for. To save time, you can compile the libraries only for the target you are using;
+  - Whether the compiled libraries will be copied to the ``arduino-esp32`` directory after compilation so that they can be used in the Arduino IDE;
+  - The path to the ``arduino-esp32`` directory. This will be automatically set if the ``arduino-esp32`` repository is in one of the default locations;
+    If not, you can set it manually here. If using the docker image, it should not be changed as the mount point is fixed;
+  - The branch of the ``arduino-esp32`` repository to be used. This is useful if you want to compile the libraries for a
+    specific branch or pull request of the ``arduino-esp32`` repository. Leave empty to use the default branch for this ``ESP-IDF`` version;
+  - The branch of the ``ESP-IDF`` repository to be used. This is useful if you want to compile the libraries for a specific branch of the ``ESP-IDF`` repository.
+    Leave empty to use the default branch for this IDF version;
+  - The commit of the ``ESP-IDF`` repository to be used. This is useful if you want to compile the libraries for a specific commit on the selected branch.
+    Leave empty to use the latest commit;
+  - The debug level to be set in ``ESP-IDF``.
+
 Docker Image
 ------------
 
@@ -224,8 +265,9 @@ Tags
 
 Multiple tags of this image are maintained:
 
-- ``latest``: tracks ``master`` branch of the Lib Builder
-- ``release-vX.Y``: tracks ``release/vX.Y`` branch of the Lib Builder
+- ``latest``: tracks ``master`` branch of the Lib Builder. Note that the ``latest`` tag is not recommended for use as, depending on the
+  development stage of the Lib Builder, it might not be stable or might not contain the latest changes;
+- ``release-vX.Y``: tracks ``release/vX.Y`` branch of the Lib Builder.
 
 .. note::
     Versions of Lib Builder released before this feature was introduced do not have corresponding Docker image versions.
@@ -234,7 +276,7 @@ Multiple tags of this image are maintained:
 Usage
 *****
 
-Before using the ``espressif/esp32-arduino-lib-builder`` Docker image locally, make sure you have Docker installed.
+Before using the ``espressif/esp32-arduino-lib-builder`` Docker image locally, make sure you have Docker installed and running on your machine.
 Follow the instructions at https://docs.docker.com/install/, if it is not installed yet.
 
 If using the image in a CI environment, consult the documentation of your CI service on how to specify the image used for the build process.
@@ -248,7 +290,7 @@ To run the Docker image manually, use the following command from the root of the
 
 .. code-block:: bash
 
-    docker run --rm -it -v $PWD:/arduino-esp32 -e TERM=xterm-256color espressif/esp32-arduino-lib-builder
+    docker run --rm -it -v $PWD:/arduino-esp32 -e TERM=xterm-256color espressif/esp32-arduino-lib-builder:release-v5.1
 
 This will start the Lib Builder UI for compiling the libraries. The above command explained:
 
@@ -258,7 +300,8 @@ This will start the Lib Builder UI for compiling the libraries. The above comman
 - ``-t`` Allocate a pseudo-TTY;
 - ``-e TERM=xterm-256color``: Optional. Sets the terminal type to ``xterm-256color`` to display colors correctly;
 - ``-v $PWD:/arduino-esp32``: Optional. Mounts the current folder at ``/arduino-esp32`` inside the container. If not provided, the container will not copy the compiled libraries to the host machine;
-- ``espressif/esp32-arduino-lib-builder``: uses Docker image ``espressif/esp32-arduino-lib-builder`` with tag ``latest``. The ``latest`` tag is implicitly added by Docker when no tag is specified.
+- ``espressif/esp32-arduino-lib-builder:release-v5.1``: uses Docker image ``espressif/esp32-arduino-lib-builder`` with tag ``release-v5.1``.
+  The ``latest`` tag is implicitly added by Docker when no tag is specified. It is recommended to use a specific version tag to ensure reproducibility of the build process.
 
 .. warning::
     The ``-v`` option is used to mount a folder from the host machine to the container. Make sure the folder already exists on the host machine before running the command.
@@ -278,24 +321,32 @@ For example, to run a terminal inside the container, you can run:
 
 .. code-block:: bash
 
-    docker run -it espressif/esp32-arduino-lib-builder:latest /bin/bash
+    docker run -it espressif/esp32-arduino-lib-builder:release-v5.1 /bin/bash
 
 Running the Docker image using the provided run script will depend on the host OS.
-Use the following command from the root of the ``arduino-esp32`` repository to execute the image in a Linux or macOS environment:
+Use the following command from the root of the ``arduino-esp32`` repository to execute the image in a Linux or macOS environment for
+the ``release-v5.1`` tag:
 
 .. code-block:: bash
 
-    curl -LJO https://raw.githubusercontent.com/espressif/esp32-arduino-lib-builder/master/tools/docker/run.sh
+    curl -LJO https://raw.githubusercontent.com/espressif/esp32-arduino-lib-builder/refs/heads/release/v5.1/tools/docker/run.sh
     chmod +x run.sh
     ./run.sh $PWD
 
 For Windows, use the following command in PowerShell from the root of the ``arduino-esp32`` repository:
 
 .. code-block:: powershell
 
-    Invoke-WebRequest -Uri "https://raw.githubusercontent.com/espressif/esp32-arduino-lib-builder/master/tools/docker/run.ps1" -OutFile "run.ps1"
+    Invoke-WebRequest -Uri "https://raw.githubusercontent.com/espressif/esp32-arduino-lib-builder/refs/heads/release/v5.1/tools/docker/run.ps1" -OutFile "run.ps1"
     .\run.ps1 $pwd
 
+As the script is unsigned, you may need to change the execution policy of the current session before running the script.
+To do so, run the following command in PowerShell:
+
+.. code-block:: powershell
+
+    Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass
+
 .. warning::
     It is always a good practice to understand what the script does before running it.
     Make sure to analyze the content of the script to ensure it is safe to run and won't cause any harm to your system.