Fix source build workflows (ros-controls#1914)

Author: christophfroehlich

.github/workflows/humble-source-build.yml

@@ -15,6 +15,11 @@ on:
       - '**/CMakeLists.txt'
       - 'ros2_controllers.humble.repos'
       - '**.xml'
+  pull_request:
+    branches:
+      - humble
+    paths:
+      - '.github/workflows/humble-source-build.yml'
   schedule:
     # Run every day to detect flakiness and broken dependencies
     - cron: '03 3 * * MON-FRI'
@@ -25,4 +30,4 @@ jobs:
     with:
       ros_distro: humble
       ref: humble
-      os_name: ubuntu-22.04
+      container: ubuntu:22.04

.github/workflows/jazzy-source-build.yml

@@ -15,6 +15,11 @@ on:
       - '**/CMakeLists.txt'
       - 'ros2_controllers.jazzy.repos'
       - '**.xml'
+  pull_request:
+    branches:
+      - jazzy
+    paths:
+      - '.github/workflows/jazzy-source-build.yml'
   schedule:
     # Run every day to detect flakiness and broken dependencies
     - cron: '03 3 * * MON-FRI'

.github/workflows/rolling-source-build.yml

@@ -16,6 +16,11 @@ on:
       - 'ros2_controllers.rolling.repos'
       - 'ros2_controllers.kilted.repos'
       - '**.xml'
+  pull_request:
+    branches:
+      - master
+    paths:
+      - '.github/workflows/rolling-source-build.yml'
   schedule:
     # Run every day to detect flakiness and broken dependencies
     - cron: '03 3 * * MON-FRI'