Build riot examples in ci

.github/actions/riot/action.yml

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+name: Install and build RIOT dependencies
+description: Install and build RIOT dependencies
+runs:
+  using: "composite"
+  steps:
+    - name: Setup environment variables
+      run: |
+        echo "RIOT_VERSION=2024.07" >> $GITHUB_ENV
+      shell: bash
+
+    - name: Dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y --no-install-recommends git gcc-arm-none-eabi make \ 
+            gcc-multilib libstdc++-arm-none-eabi-newlib openocd gdb-multiarch \
+            doxygen wget unzip python3-serial
+      shell: bash
+
+    - name: Cache RIOT
+      id: cache-riot
+      uses: actions/cache@v4
+      with:
+        path: /opt/RIOT-${{env.RIOT_VERSION}}
+        key: riot-${{env.RIOT_VERSION}}
+
+    - name: Install RIOT
+      if: steps.cache-riot.outputs.cache-hit != 'true'
+      run: |
+        wget -q "https://github.com/RIOT-OS/RIOT/archive/refs/tags/${{env.RIOT_VERSION}}.tar.gz"
+        sudo tar xvf "${{env.RIOT_VERSION}}.tar.gz" --directory /opt/
+      shell: bash

.github/workflows/riot.yml

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+name: RIOT examples
+
+on:
+  pull_request:
+
+jobs:
+  ci:
+    name: Build RIOT examples
+    runs-on: ubuntu-latest
+    env:
+      RIOT_VERSION: "2024.07"
+      RIOTBASE: "/opt/RIOT-2024.07"
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - name: Install dependencies
+        uses: ./.github/actions/riot
+
+      - name: Build examples
+        run: |
+          cd examples/riot
+          ./buildAll.sh

examples/riot/buildAll.sh

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+#!/bin/bash
+
+set -e
+
+# List of folders
+FOLDERS=("blinky" "hello" )
+
+BOARD=nucleo-f429zi
+
+# Command to execute in each folder
+COMMAND="make BOARD=$BOARD all"
+
+# Iterate over each folder and execute the command
+for dir in "${FOLDERS[@]}"; do
+    echo "Entering $dir"
+		pushd $dir
+		$COMMAND
+		popd
+done