diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..569e767
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,25 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        # we'll add windows-latest later
+        os: [ubuntu-latest, macos-latest]
+
+    steps:
+    - uses: 
+      - actions/checkout@v2
+      - carlosperate/arm-none-eabi-gcc-action@v1
+
+    - name: Build
+      shell: bash
+      run: |
+        ./build.sh
diff --git a/CMakeLists.txt b/CMakeLists.txt
index aacff96..04195d4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,8 +13,14 @@ set(PICO_SDK_FETCH_FROM_GIT on)
 include(cmake/pico_sdk_import.cmake)
 
 
-# copy it over from cmake/credentials.cmake.example
-include(cmake/credentials.cmake)
+if(EXISTS cmake/credentials.cmake)
+    # copy it over from cmake/credentials.cmake.example
+    include(cmake/credentials.cmake)
+else()
+    message(WARNING "Credentials file not found, using default values!")
+    set(WIFI_SSID "SSID" CACHE INTERNAL "WiFi SSID for examples")
+    set(WIFI_PASSWORD "password" CACHE INTERNAL "WiFi password for examples")
+endif()
 
 project(pico_w_webserver C CXX ASM)
 set(CMAKE_EXPORT_COMPILE_COMMANDS TRUE)
diff --git a/build.sh b/build.sh
index db0008d..6ee98f4 100755
--- a/build.sh
+++ b/build.sh
@@ -1,10 +1,11 @@
 #!/bin/sh
 
 if which ninja >/dev/null; then
-    cmake -B build -G Ninja $1
+    cmake -B build -G Ninja $1 && \
     ninja -C build $1
 else
-    cmake -B build $1
-    make -j $(getconf _NPROCESSORS_ONLN) -C build $1
+    cmake -B build $1 && \
+    make -j $(getconf _NPROCESSORS_ONLN) -C build $1 && \
     echo "done. P.S.: Consider installing ninja - it's faster"
 fi
+exit $?
\ No newline at end of file