diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8c06797a0..f2548eab4 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,8 +10,8 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v1
 
-    #- name: Docker ESP-IDF
-    #  run: docker pull espressif/idf:latest
+    - name: Pull ESP-IDF docker
+      run: docker pull espressif/idf:latest
 
     - name: Checkout TinyUSB
       uses: actions/checkout@v2
@@ -21,8 +21,7 @@ jobs:
     - name: Build
       run: |
         cd examples/device/cdc_msc_freertos
-        docker run --rm -v $PWD:/project -w /project espressif/idf:latest idf.py build
-        #python3 tools/build_esp32s.py
+        docker run --rm -v $PWD:/project -w /project espressif/idf:latest python3 tools/build_esp32s.py
         exit 1
 
   # Unit testing with Ceedling