ci: Add missing checkout step

Author: madadam

.github/workflows/ci.yml

@@ -282,6 +282,10 @@ jobs:
     name: "build docker image to run integration tests on android"
     runs-on: self-hosted
     steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
       - run: ./docker/linux.sh container build
 
   integration_test_android:

docker/linux.sh

@@ -93,6 +93,8 @@ function print_help() {
         "container")
             echo "Explicitly manage the container"
             echo
+            echo "Note the commands normally build, start and stop the container automatically. This is only useful when running multiple commands on the same container."
+            echo
             echo "Usage: $0 container <start|stop|build>"
             echo
             echo "Commands:"