diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 5650e67..31d4745 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -26,6 +26,8 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - name: Docker meta
         id: meta
diff --git a/Containerfile b/Containerfile
index 196a151..d1b437c 100644
--- a/Containerfile
+++ b/Containerfile
@@ -11,6 +11,7 @@ ENV VERSION="${VERSION}"
 ENV WEB_UI="false"
 
 RUN mkdir /build-container-installer
+COPY /external /build-container-installer/external
 COPY /lorax_templates /build-container-installer/lorax_templates
 COPY /xorriso /build-container-installer/xorriso
 COPY /Makefile /build-container-installer