CI: use buildbot container for building

Instead of using a fresh Linux installation which is setup every time
use the Buildbot container which is used for our own Buildbot
infrastructure, too.
While at it also tidy up the workflow to make it more consistent with
other workflow.

Signed-off-by: Paul Spooren <mail@aparcar.org>
Co-Developed-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit 3b23227d43ec720f810e6e261945530f7bc549f0)

.github/workflows/tools.yml

@@ -10,31 +10,25 @@ permissions:
   contents: read
 
 jobs:
-  build:
-    name: tools-${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: False
-      matrix:
-        os: 
-          - ubuntu-latest
-          - macos-latest
+  build-macos-latest:
+    runs-on: macos-latest
+
     steps:
       - name: Checkout
         uses: actions/checkout@v2
         with:
-          fetch-depth: 0
           path: openwrt
 
       - name: Setup MacOS
-        if: ${{ matrix.os == 'macos-latest' }}
         run: |
-          echo "WORKPATH=/Volumes/OpenWrt/openwrt/" >> "$GITHUB_ENV"
+          echo "WORKPATH=/Volumes/OpenWrt" >> "$GITHUB_ENV"
           hdiutil create -size 20g -type SPARSE -fs "Case-sensitive HFS+" -volname OpenWrt OpenWrt.sparseimage
           hdiutil attach OpenWrt.sparseimage
           mv "$GITHUB_WORKSPACE/openwrt" /Volumes/OpenWrt/
-          cd "$WORKPATH"
 
+      - name: Install required prereq on MacOS
+        working-directory: ${{ env.WORKPATH }}/openwrt
+        run: |
           brew install \
             autoconf \
             automake \
@@ -74,74 +68,63 @@ jobs:
             echo "/usr/local/opt/make/libexec/gnubin" >> "$GITHUB_PATH"
             echo "/usr/local/opt/make/libexec/gnubin" >> "$GITHUB_PATH"
             echo "/usr/sbin" >> "$GITHUB_PATH"
-            pwd
-
-      - name: Setup Ubuntu
-        if: ${{ matrix.os == 'ubuntu-latest' }}
-        env:
-          DEBIAN_FRONTEND: noninteractive
-        run: |
-          sudo apt-get update
-          sudo apt-get -y install \
-            build-essential \
-            ccache \
-            clang-12 \
-            ecj \
-            fastjar \
-            file \
-            g++ \
-            gawk \
-            gettext \
-            git \
-            java-propose-classpath \
-            libelf-dev \
-            libncurses-dev \
-            libssl-dev \
-            mkisofs \
-            python3 \
-            python3-dev \
-            python3-distutils \
-            python3-setuptools \
-            qemu-utils \
-            rsync \
-            subversion \
-            swig \
-            unzip \
-            wget \
-            xsltproc \
-            zlib1g-dev
-          echo "WORKPATH=$GITHUB_WORKSPACE/openwrt/" >> "$GITHUB_ENV"
-          cd "$WORKPATH"
-          pwd
 
       - name: Make prereq
-        run: |
-          cd "$WORKPATH"
-          pwd
-          make defconfig
-
-      - name: Build tools
-        run: |
-          cd "$WORKPATH"
-          make tools/install -j$(nproc) BUILD_LOG=1 || ret=$? .github/workflows/scripts/show_build_failures.sh
-
-      - name: Move logs to GITHUB_WORKSPACE
-        if: always()
-        run: |
-          cp -r "$WORKPATH/logs" "$GITHUB_WORKSPACE"
-          cp -r "$WORKPATH/.config" "$GITHUB_WORKSPACE/config"
+        working-directory: ${{ env.WORKPATH }}/openwrt
+        run: make defconfig
 
+      - name: Build tools MacOS
+        working-directory: ${{ env.WORKPATH }}/openwrt
+        run: make tools/install -j$(nproc) BUILD_LOG=1 || ret=$? .github/workflows/scripts/show_build_failures.sh
 
       - name: Upload logs
         if: always()
         uses: actions/upload-artifact@v2
         with:
-          name: ${{ matrix.os }}-logs
-          path: "logs"
+          name: macos-latest-logs
+          path: ${{ env.WORKPATH }}/openwrt/logs
 
       - name: Upload config
         if: always()
         uses: actions/upload-artifact@v2
         with:
-          name: ${{ matrix.os }}-config
-          path: "config"
+          name: macos-latest-config
+          path: ${{ env.WORKPATH }}/openwrt/.config
+
+  build-linux-buildbot:
+    runs-on: ubuntu-latest
+    container: registry.gitlab.com/openwrt/buildbot/buildworker-3.4.1
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          path: 'openwrt'
+
+      - name: Fix permission
+        run: |
+          chown -R buildbot:buildbot openwrt
+
+      - name: Make prereq
+        shell: su buildbot -c "sh -e {0}"
+        working-directory: openwrt
+        run: make defconfig
+
+      - name: Build tools BuildBot Container
+        shell: su buildbot -c "sh -e {0}"
+        working-directory: openwrt
+        run: make tools/install -j$(nproc) BUILD_LOG=1 || ret=$? .github/workflows/scripts/show_build_failures.sh
+
+      - name: Upload logs
+        if: always()
+        uses: actions/upload-artifact@v2
+        with:
+          name: linux-buildbot-logs
+          path: openwrt/logs
+
+      - name: Upload config
+        if: always()
+        uses: actions/upload-artifact@v2
+        with:
+          name: linux-buildbot-config
+          path: openwrt/.config