Update build workflow to use official Zephyr setup action and restrict OS matrix to Windows

Author: andre-stefanov

.github/actions/setup-zephyr/action.yml

@@ -9,13 +9,19 @@ on:
 permissions:
   contents: read
 
+env:
+  ZEPHYR_SDK_VERSION: 0.17.4
+  ZEPHYR_TOOLCHAINS: |
+    arm-zephyr-eabi
+    xtensa-espressif_esp32s3_zephyr-elf
+
 jobs:
   build:
     name: Build app and tests
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, macos-26, windows-2022]
+        os: [windows-2022]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
@@ -25,16 +31,56 @@ jobs:
           persist-credentials: false
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: 3.12
+          cache: 'pip'
+
+      - name: Install system dependencies
+        shell: bash
+        run: |
+          if [ "${{ runner.os }}" = "Linux" ]; then
+            sudo rm -f /var/lib/man-db/auto-update
+            sudo apt-get update -y
+            sudo apt-get install -y ninja-build ccache gperf
+            if [ "${{ runner.arch }}" = "X64" ]; then
+              sudo apt-get install -y libc6-dev-i386 g++-multilib
+            fi
+          elif [ "${{ runner.os }}" = "macOS" ]; then
+            brew install ninja ccache qemu dtc gperf
+          elif [ "${{ runner.os }}" = "Windows" ]; then
+            choco feature enable -n allowGlobalConfirmation
+            choco install ninja wget gperf
+          fi
 
-      - name: Setup Zephyr project
-        uses: ./OpenAstroFocuser/.github/actions/setup-zephyr
+      - name: Install west
+        shell: bash
+        run: |
+          pip install west
+
+      - name: Initialize Zephyr workspace
+        shell: bash
+        run: |
+          west init -l OpenAstroFocuser
+          west update
+
+      - name: Install pip dependencies
+        shell: bash
+        run: |
+          west packages pip --install --ignore-venv-check || pip3 install -r zephyr/scripts/requirements.txt
+
+      - name: Zephyr SDK cache
+        uses: actions/cache@v5
         with:
-          app-path: OpenAstroFocuser
-          toolchains: arm-zephyr-eabi:xtensa-espressif_esp32s3_zephyr-elf
-          ccache-cache-key: ${{ matrix.os }}
+          path: ~/zephyr-sdk-${{ env.ZEPHYR_SDK_VERSION }}
+          key: zephyr-sdk-${{ env.ZEPHYR_SDK_VERSION }}-${{ matrix.os }}
+
+      - name: Install Zephyr SDK
+        if: steps.cache.outputs.cache-hit != 'true'
+        shell: bash
+        run: |
+            TOOLCHAINS="$(echo "${{ env.ZEPHYR_TOOLCHAINS }}" | xargs)"
+            west sdk install --version ${{ env.ZEPHYR_SDK_VERSION }} -t ${TOOLCHAINS}
 
       - name: Build firmware
         working-directory: OpenAstroFocuser
@@ -52,4 +98,4 @@ jobs:
           if [ "${{ runner.os }}" = "Windows" ]; then
             EXTRA_TWISTER_FLAGS="--short-build-path -O/tmp/twister-out"
           fi
-          west twister -T tests -v --inline-logs --integration $EXTRA_TWISTER_FLAGS
+          west twister -T tests -v --inline-logs --integration $EXTRA_TWISTER_FLAGS