unbutn dist

.github/workflows/linux.yml

@@ -20,10 +20,12 @@ jobs:
     # well on Windows or Mac.  You can convert this to a matrix build if you need
     # cross-platform coverage.
     # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-bionic
 
     steps:
-    - uses: actions/checkout@v2
+    - - uses: actions/checkout@v2
+      with:
+        submodules: 'recursive'
 
     - name: Create Build Environment
       # Some projects don't allow in-source building, so create a separate build directory