ci: add workflows

.github/workflows/docker.yml

@@ -0,0 +1,68 @@
+name: Build OCI Image
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+  workflow_dispatch:
+
+permissions:
+  contents: none
+
+jobs:
+  build:
+    name: Build ${{ matrix.variant.name }} image
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        variant:
+          - name: Alpine
+            tag: alpine
+            dockerfile: Dockerfile.alpine
+          - name: Ubuntu
+            tag: ubuntu
+            dockerfile: Dockerfile
+    steps:
+      - name: Check out code
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+
+      - name: Login to GHCR
+        uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
+        with:
+          registry: https://ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ github.token }}
+        if: ${{ github.event_name != 'pull_request' }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0
+
+      - name: Set up Docker Metadata
+        id: meta
+        uses: docker/metadata-action@dbef88086f6cef02e264edb7dbf63250c17cef6c # v5.5.0
+        with:
+          images: ${{ github.repository }}
+          flavor:
+            latest=auto
+            prefix=${{ matrix.variant.tag }}-,onlatest=true
+          tags: |
+            type=edge
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+
+      - name: Build and push
+        uses: docker/build-push-action@4a13e500e55cf31b7a5d59a38ab2040ab0f42f56 # v5.1.0
+        with:
+          push: ${{ github.event_name != 'pull_request' }}
+          cache-from: type=gha,scope=${{ matrix.variant.tag }}
+          cache-to: type=gha,mode=max,scope=${{ matrix.variant.tag }}
+          context: .
+          file: ${{ matrix.variant.dockerfile }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/lint.yml

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+name: Lint C++ code
+
+on:
+  push:
+  workflow_dispatch:
+
+permissions:
+  contents: none
+
+jobs:
+  lint:
+    name: clang-format
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Check out code
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+
+      - name: clang-format Check
+        uses: jidicula/clang-format-action@v4.11.0
+        with:
+          clang-format-version: 17
+          check-path: src