feat: add continuous deployment workflow and refactor Docker setup

Author: floreks

.github/workflows/cd.yml

@@ -0,0 +1,100 @@
+name: CD
+
+on:
+  push:
+    branches: [ main ]
+    tags:
+      - 'v*'
+
+jobs:
+  build:
+    name: Build for ${{ matrix.platform }}
+    runs-on: ${{ matrix.runs-on }}
+    strategy:
+      matrix:
+        include:
+          - platform: linux/amd64
+            runs-on: ubuntu-latest
+            arch: amd64
+          - platform: linux/arm64
+            runs-on: ubuntu-24.04-arm
+            arch: arm64
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Build dist directory
+        run: make build
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ghcr.io/${{ github.repository }}
+          flavor: |
+            suffix=-${{ matrix.arch }}
+          tags: |
+            type=raw,value=latest
+            type=sha
+            type=ref,event=tag
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push single-platform Docker image
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          push: true
+          platforms: ${{ matrix.platform }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha,scope=${{ matrix.platform }}
+          cache-to: type=gha,mode=max,scope=${{ matrix.platform }}
+
+  merge-manifests:
+    name: Merge Multi-Arch Manifests
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Docker metadata for final image
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ghcr.io/${{ github.repository }}
+          tags: |
+            type=raw,value=latest
+            type=sha
+            type=ref,event=tag
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create and push manifest list
+        uses: docker/build-push-action@v4
+        with:
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64,linux/arm64
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

Dockerfile

@@ -1,21 +1,4 @@
-FROM ubuntu:22.04 AS libbpf_builder
+FROM busybox
 
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends git ca-certificates gcc make pkg-config libelf-dev
-
-COPY ./ /build/ebpf_exporter
-
-RUN make -j $(nproc) -C /build/ebpf_exporter libbpf.a && \
-    tar -C /build/ebpf_exporter/libbpf/dest -czf /build/libbpf.tar.gz .
-
-FROM ubuntu:22.04 AS bpf_builder
-
-# Install dependencies for building eBPF programs
-RUN apt-get update && \
-    apt-get install -y clang make
-
-COPY --from=libbpf_builder /build/ebpf_exporter/libbpf /build/ebpf_exporter/libbpf
-
-COPY ./ /build/ebpf_exporter
-
-RUN make -j $(nproc) -C /build/ebpf_exporter/src CC=clang
+# Copy only the dist directory
+COPY dist/ /ebpf

Dockerfile.builder

@@ -0,0 +1,21 @@
+FROM ubuntu:22.04 AS libbpf_builder
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends git ca-certificates gcc make pkg-config libelf-dev
+
+COPY ./ /build/ebpf_exporter
+
+RUN make -j $(nproc) -C /build/ebpf_exporter libbpf.a && \
+    tar -C /build/ebpf_exporter/libbpf/dest -czf /build/libbpf.tar.gz .
+
+FROM ubuntu:22.04 AS bpf_builder
+
+# Install dependencies for building eBPF programs
+RUN apt-get update && \
+    apt-get install -y clang make
+
+COPY --from=libbpf_builder /build/ebpf_exporter/libbpf /build/ebpf_exporter/libbpf
+
+COPY ./ /build/ebpf_exporter
+
+RUN make -j $(nproc) -C /build/ebpf_exporter/src CC=clang

Makefile

@@ -41,7 +41,7 @@ clean:
 .PHONY: build
 build: clean
 	@echo "Building eBPF programs in Docker..."
-	@docker build -t ebpf-builder .
+	@docker build -t ebpf-builder -f Dockerfile.builder .
 	@docker run --rm -v $(PWD)/dist:/output ebpf-builder sh -c "cp -r /build/ebpf_exporter/dist/* /output && chown -R $(shell id -u):$(shell id -g) /output"
 	@echo "Copied eBPF programs to dist directory"
 	@cp -r config/* dist/