ci: add Docker multi-platform build and Release workflows

.dockerignore

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+target/
+.git/
+.github/
+.claude/
+.worktrees/
+.config/
+local-test/
+tests/
+*.md
+deny.toml
+typos.toml
+.editorconfig
+.gitignore

.github/workflows/docker.yml

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+name: Docker
+
+on:
+  push:
+    tags: ["v*"]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+env:
+  IMAGE_NAME: ghcr.io/morph-l2/morph-reth
+
+jobs:
+  build-push:
+    name: Build and Push
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.IMAGE_NAME }}
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha,prefix=
+            type=raw,value=latest,enable=${{ !contains(github.ref, '-') }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: ${{ github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v') }}
+          platforms: linux/amd64,linux/arm64
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    tags: ["v*"]
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "Tag to release (e.g., v0.1.0)"
+        required: true
+      dry_run:
+        description: "Dry run (skip release creation)"
+        type: boolean
+        default: true
+
+permissions:
+  contents: read
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  extract-version:
+    name: Extract Version
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.version.outputs.version }}
+      ref: ${{ steps.version.outputs.ref }}
+    steps:
+      - name: Determine tag
+        id: version
+        run: |
+          if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
+            TAG="${{ inputs.tag }}"
+            if [[ ! "$TAG" =~ ^v[0-9]+\.[0-9]+\.[0-9]+([.-][0-9A-Za-z.-]+)?$ ]]; then
+              echo "::error::Invalid tag format: '$TAG'. Expected format like v0.1.0 or v0.1.0-rc.1"
+              exit 1
+            fi
+            REF="refs/tags/${TAG}"
+          else
+            TAG="${GITHUB_REF#refs/tags/}"
+            REF="${GITHUB_REF}"
+          fi
+          VERSION="${TAG#v}"
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+          echo "ref=$REF" >> "$GITHUB_OUTPUT"
+          echo "Extracted version: $VERSION"
+
+  check-version:
+    name: Check Version
+    runs-on: ubuntu-latest
+    needs: extract-version
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ needs.extract-version.outputs.ref }}
+          persist-credentials: false
+
+      - name: Verify Cargo.toml version matches tag
+        run: |
+          CARGO_VERSION=$(cargo metadata --format-version 1 --no-deps \
+            | jq -r '.packages[] | select(.name == "morph-reth") | .version')
+          TAG_VERSION="${{ needs.extract-version.outputs.version }}"
+          echo "Cargo.toml version: $CARGO_VERSION"
+          echo "Tag version: $TAG_VERSION"
+          if [[ "$TAG_VERSION" != "$CARGO_VERSION"* ]]; then
+            echo "::error::Tag version ($TAG_VERSION) does not match Cargo.toml version ($CARGO_VERSION)"
+            exit 1
+          fi
+
+  build:
+    name: Build ${{ matrix.target }}
+    runs-on: ubuntu-latest
+    needs: [extract-version, check-version]
+    if: ${{ !cancelled() && needs.check-version.result == 'success' }}
+    strategy:
+      matrix:
+        include:
+          - target: x86_64-unknown-linux-gnu
+            archive: morph-reth-${{ needs.extract-version.outputs.version }}-x86_64-linux
+          - target: aarch64-unknown-linux-gnu
+            archive: morph-reth-${{ needs.extract-version.outputs.version }}-aarch64-linux
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ needs.extract-version.outputs.ref }}
+          persist-credentials: false
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+
+      - name: Cache Rust build artifacts
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+          key: ${{ matrix.target }}
+
+      - name: Install cross
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cross
+
+      - name: Build binary
+        run: cross build --release --locked --target ${{ matrix.target }} --bin morph-reth
+
+      - name: Package binary
+        run: |
+          mkdir -p dist
+          cp target/${{ matrix.target }}/release/morph-reth dist/
+          cd dist
+          tar czf ../${{ matrix.archive }}.tar.gz morph-reth
+          cd ..
+          sha256sum ${{ matrix.archive }}.tar.gz > ${{ matrix.archive }}.tar.gz.sha256
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.archive }}
+          path: |
+            ${{ matrix.archive }}.tar.gz
+            ${{ matrix.archive }}.tar.gz.sha256
+
+  draft-release:
+    name: Draft Release
+    runs-on: ubuntu-latest
+    needs: [extract-version, build]
+    if: ${{ !(github.event_name == 'workflow_dispatch' && inputs.dry_run) }}
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ needs.extract-version.outputs.ref }}
+          fetch-depth: 0
+
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          merge-multiple: true
+          path: artifacts
+
+      - name: Generate changelog
+        id: changelog
+        run: |
+          PREVIOUS_TAG=$(git describe --tags --abbrev=0 HEAD^ 2>/dev/null || echo "")
+          if [[ -n "$PREVIOUS_TAG" ]]; then
+            CHANGELOG=$(git log --pretty=format:"- %s" ${PREVIOUS_TAG}..HEAD)
+          else
+            CHANGELOG=$(git log -n 20 --pretty=format:"- %s")
+          fi
+          # Write to file to avoid escaping issues
+          echo "$CHANGELOG" > changelog.md
+
+      - name: Create draft release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          VERSION="${{ needs.extract-version.outputs.version }}"
+          PRERELEASE=""
+          if [[ "$VERSION" == *"alpha"* ]] || [[ "$VERSION" == *"beta"* ]] || [[ "$VERSION" == *"rc"* ]]; then
+            PRERELEASE="--prerelease"
+          fi
+          gh release create "v${VERSION}" \
+            --verify-tag \
+            --draft \
+            --title "v${VERSION}" \
+            --notes-file changelog.md \
+            $PRERELEASE \
+            artifacts/*

Dockerfile

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+FROM lukemathwalker/cargo-chef:latest-rust-1 AS chef
+WORKDIR /app
+
+# reth-mdbx-sys requires libclang for bindgen
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends libclang-dev pkg-config && \
+    rm -rf /var/lib/apt/lists/*
+
+# Generate dependency recipe
+FROM chef AS planner
+COPY . .
+RUN cargo chef prepare --recipe-path recipe.json
+
+# Build dependencies + application
+FROM chef AS builder
+COPY --from=planner /app/recipe.json recipe.json
+
+# Build profile, release by default
+ARG BUILD_PROFILE=release
+ENV BUILD_PROFILE=$BUILD_PROFILE
+
+# Extra Cargo flags
+ARG RUSTFLAGS=""
+ENV RUSTFLAGS="$RUSTFLAGS"
+
+# Build dependencies (cached layer)
+RUN cargo chef cook --profile $BUILD_PROFILE --recipe-path recipe.json
+
+# Build the application
+COPY . .
+RUN cargo build --profile $BUILD_PROFILE --locked --bin morph-reth
+
+# Copy binary to a fixed location (ARG not resolved in COPY)
+RUN cp /app/target/$BUILD_PROFILE/morph-reth /app/morph-reth
+
+# Minimal runtime image
+FROM debian:bookworm-slim AS runtime
+
+LABEL org.opencontainers.image.source=https://github.com/morph-l2/morph-reth
+LABEL org.opencontainers.image.licenses="MIT OR Apache-2.0"
+RUN apt-get update && apt-get install -y --no-install-recommends ca-certificates && \
+    useradd --system --create-home --home-dir /var/lib/morph-reth --shell /usr/sbin/nologin morph-reth && \
+    rm -rf /var/lib/apt/lists/*
+
+COPY --from=builder /app/morph-reth /usr/local/bin/
+
+EXPOSE 8545 8546 8551 30303 30303/udp
+
+WORKDIR /var/lib/morph-reth
+USER morph-reth
+ENTRYPOINT ["/usr/local/bin/morph-reth"]