Build examples in CI workflow
diff --git a/.github/workflows/binary_packages.yml b/.github/workflows/binary_packages.yml
index 4781f12..501e85a 100644
--- a/.github/workflows/binary_packages.yml
+++ b/.github/workflows/binary_packages.yml
@@ -38,9 +38,15 @@
           tar xzf nanopb/dist/*.tar.gz
           cd nanopb-*/tests
           python3 -m SCons
-          cd ../examples/simple
-          make
-          ./simple
+
+      - name: Test examples
+        run: |
+          cd nanopb-*/examples
+          (cd simple; make; ./simple)
+          (cd network_server; make)
+          (cd using_union_messages; make)
+          (cd cmake_simple; mkdir build; cd build; cmake ..; make)
+          (cd cmake_relpath; mkdir build; cd build; cmake ..; make)
 
   build_windows:
     name: Build binary on Windows 2019