Use espressif/idf Docker container instead of ci-action

Author: swoboda1337

.github/workflows/build.yml

@@ -14,6 +14,8 @@ env:
 jobs:
   build:
     runs-on: ubuntu-latest
+    container:
+      image: espressif/idf:v5.5.1
     strategy:
       fail-fast: false
       matrix:
@@ -27,19 +29,15 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Setup ESP-IDF
-        uses: espressif/esp-idf-ci-action@v1
-        with:
-          esp_idf_version: ${{ env.ESP_IDF_VERSION }}
-          target: ${{ matrix.target }}
-
       - name: Create project from esp_hosted slave example
         run: |
+          . $IDF_PATH/export.sh
           idf.py create-project-from-example "espressif/esp_hosted^${{ env.ESP_HOSTED_VERSION }}:slave"
 
       - name: Build firmware
         working-directory: slave
         run: |
+          . $IDF_PATH/export.sh
           idf.py set-target ${{ matrix.target }}
           idf.py build