CI: checkout submodules

.github/workflows/build-ros.yml

@@ -1,7 +1,7 @@
 # Based on GTSAM file (by @ProfFan)
 name: CI Build colcon
 
-on: [push, pull_request]
+on: [push]
 
 jobs:
  build_docker: # On Linux, iterates on all ROS 1 and ROS 2 distributions.
@@ -50,8 +50,14 @@ jobs:
  image: ${{ matrix.docker_image }}
 
  steps:
- - name: Checkout source code
- uses: actions/checkout@v3
+ - name: Checkout
+ run: |
+ apt-get -y update
+ apt-get -y install git
+ git clone https://github.com/$GITHUB_REPOSITORY.git --recursive "$GITHUB_WORKSPACE"
+ git config --global --add safe.directory "$GITHUB_WORKSPACE"
+ git checkout $GITHUB_SHA
+ git submodule update --init --recursive
 
  - name: setup ROS environment
  uses: ros-tooling/setup-ros@v0.7