feat(ci): inline the workflow

.gitea/workflows/build.yml

@@ -1,5 +1,108 @@
 on: [push, pull_request, workflow_dispatch]
 
 jobs:
+  matrix:
+    runs-on: ubuntu-latest
+    name: Fetch Build Keyboards
+    outputs:
+      build_matrix: ${{ env.build_matrix }}
+      has_valid_build_matrix: ${{ steps.fetch.outputs.has_valid_build_matrix }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install yq
+        run: |
+          sudo wget -qO /usr/local/bin/yq https://github.com/mikefarah/yq/releases/latest/download/yq_linux_amd64
+          sudo chmod +x /usr/local/bin/yq
+
+      - name: Fetch Build Matrix
+        id: fetch
+        run: |
+          matrix_content=$(yq -oj -I0 build.yaml)
+          if [ -z "$matrix_content" ] || [ "$matrix_content" = "null" ]; then
+            echo "has_valid_build_matrix=false" >> $GITHUB_OUTPUT
+          else
+            echo "build_matrix=$matrix_content" >> $GITHUB_ENV
+            echo "has_valid_build_matrix=true" >> $GITHUB_OUTPUT
+          fi
+
   build:
-    uses: https://github.com/zmkfirmware/zmk/.github/workflows/build-user-config.yml@main
+    runs-on: ubuntu-latest
+    if: needs.matrix.outputs.has_valid_build_matrix == 'true'
+    container:
+      image: zmkfirmware/zmk-build-arm:stable
+    needs: matrix
+    name: Build
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJson(needs.matrix.outputs.build_matrix) }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Create build directory
+        run: |
+          echo "build_dir=$(mktemp -d)" >> $GITHUB_ENV
+
+      - name: Prepare variables
+        shell: bash -x {0}
+        env:
+          board: ${{ matrix.board }}
+          shield: ${{ matrix.shield }}
+          artifact_name: ${{ matrix.artifact-name }}
+          snippet: ${{ matrix.snippet }}
+        run: |
+          if [ -e zephyr/module.yml ]; then
+            export zmk_load_arg=" -DZMK_EXTRA_MODULES='${GITHUB_WORKSPACE}'"
+            new_tmp_dir="${TMPDIR:-/tmp}/zmk-config"
+            mkdir -p "${new_tmp_dir}"
+            echo "base_dir=${new_tmp_dir}" >> $GITHUB_ENV
+          else
+            echo "base_dir=${GITHUB_WORKSPACE}" >> $GITHUB_ENV
+          fi
+
+          if [ -n "${snippet}" ]; then
+            extra_west_args="-S \"${snippet}\""
+          fi
+
+          echo "zephyr_version=${ZEPHYR_VERSION}" >> $GITHUB_ENV
+          echo "extra_west_args=${extra_west_args}" >> $GITHUB_ENV
+          echo "extra_cmake_args=${shield:+-DSHIELD=\"$shield\"}${zmk_load_arg}" >> $GITHUB_ENV
+          echo "display_name=${shield:+$shield - }${board}" >> $GITHUB_ENV
+          echo "artifact_name=${artifact_name:-${shield:+$shield-}${board//\//_}-zmk}" >> $GITHUB_ENV
+
+      - name: West Init
+        working-directory: ${{ env.base_dir }}
+        run: west init -l "${{ env.base_dir }}/config"
+
+      - name: West Update
+        working-directory: ${{ env.base_dir }}
+        run: west update --fetch-opt=--filter=tree:0
+
+      - name: West Zephyr export
+        working-directory: ${{ env.base_dir }}
+        run: west zephyr-export
+
+      - name: West Build (${{ env.display_name }})
+        working-directory: ${{ env.base_dir }}
+        shell: sh -x {0}
+        run: west build -s zmk/app -d "${{ env.build_dir }}" -b "${{ matrix.board }}" ${{ env.extra_west_args }} -- -DZMK_CONFIG=${{ env.base_dir }}/config ${{ env.extra_cmake_args }} ${{ matrix.cmake-args }}
+
+      - name: Rename artifacts
+        shell: sh -x {0}
+        run: |
+          mkdir "${{ env.build_dir }}/artifacts"
+          if [ -f "${{ env.build_dir }}/zephyr/zmk.uf2" ]
+          then
+            cp "${{ env.build_dir }}/zephyr/zmk.uf2" "${{ env.build_dir }}/artifacts/${{ env.artifact_name }}.uf2"
+          elif [ -f "${{ env.build_dir }}/zephyr/zmk.bin" ]
+          then
+            cp "${{ env.build_dir }}/zephyr/zmk.bin" "${{ env.build_dir }}/artifacts/${{ env.artifact_name }}.bin"
+          fi
+
+      - name: Archive (${{ env.display_name }})
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ env.artifact_name }}
+          path: ${{ env.build_dir }}/artifacts