add new parameter 'action' (#15)

* add new parameter 'command'
- allows overriding the actual command executed in the container
- useful for running other build commands besides 'idf.py build'
- example: generating custom flash images, or using other SDK tools

Author: binary1230

README.md

@@ -44,3 +44,15 @@ More information about supported versions of ESP-IDF: https://docs.espressif.com
 Type of ESP32 to build for. Default value `esp32`.
 
 The value must be one of the supported ESP-IDF targets as documented here: https://github.com/espressif/esp-idf#esp-idf-release-and-soc-compatibility
+
+### `command`
+
+Optional: Specify the command that will run as part of this GitHub build step.
+
+Default: `idf.py build`
+
+Overriding this is useful for running other commands via github actions. Example:
+
+```yaml
+   command: esptool.py merge_bin -o ../your_final_output.bin @flash_args
+```

action.yml

@@ -1,5 +1,5 @@
 name: "Espressif IoT Development Framework (ESP-IDF)"
-description: "This action build your firmware for ESP32 directly in GitHub using Espressif ESP-IDF Docker image."
+description: "This action builds your firmware for ESP32 directly in GitHub using Espressif ESP-IDF Docker image."
 branding:
   color: red
   icon: wifi
@@ -16,11 +16,15 @@ inputs:
     description: 'ESP32 variant to build for'
     default: 'esp32'
     required: false
+  command:
+    description: 'Command to run inside the docker container (default: builds the project)'
+    default: 'idf.py build'
+    required: false
 
 runs:
   using: "composite"
   steps:
     - run: |
         export IDF_TARGET=$(echo "${{ inputs.target }}" | tr '[:upper:]' '[:lower:]' | tr -d '_-') 
-        docker run -t -e IDF_TARGET="${IDF_TARGET}" -v "${GITHUB_WORKSPACE}:/app" -w "/app/${{ inputs.path }}" espressif/idf:${{ inputs.esp_idf_version }} idf.py build
+        docker run -t -e IDF_TARGET="${IDF_TARGET}" -v "${GITHUB_WORKSPACE}:/app" -w "/app/${{ inputs.path }}" espressif/idf:${{ inputs.esp_idf_version }} ${{ inputs.command }}
       shell: bash