diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0174b9cb7..9eebfaaf4 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -5,7 +5,7 @@ on: [pull_request, push, repository_dispatch]
 jobs:
   # Unit testing with Ceedling
   unit-test:
-    runs-on: ubuntu-latest    
+    runs-on: ubuntu-latest
     steps:
     - name: Setup Ruby
       uses: actions/setup-ruby@v1
@@ -83,11 +83,8 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v1
 
-    - name: Install Toolchains
-      run: |
-        git clone --depth 1 https://github.com/espressif/esp-idf.git $HOME/esp-idf
-        cd $HOME/esp-idf
-        ./install.sh
+    - name: Pull ESP-IDF docker
+      run: docker pull espressif/idf:latest
 
     - name: Checkout TinyUSB
       uses: actions/checkout@v2
@@ -95,6 +92,4 @@ jobs:
         submodules: 'false'
 
     - name: Build
-      run: |
-        . $HOME/esp-idf/export.sh
-        python3 tools/build_esp32s.py
+      run: docker run --rm -v $PWD:/project -w /project espressif/idf:latest python3 tools/build_esp32s.py
diff --git a/.gitignore b/.gitignore
index ea08146b4..cc700948b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,8 @@ latex
 *.elf
 *.ind
 .env
+.settings/
+.idea/
 /examples/*/*/build*
 test_old/
 tests_obsolete/