ci: add Docker build/publish workflow on push to main

.github/image/Dockerfile

@@ -0,0 +1,10 @@
+FROM debian:12-slim
+
+RUN apt-get update && apt-get install -y ca-certificates && rm -rf /var/lib/apt/lists/*
+
+ARG TARGETARCH
+COPY bin/oura-Linux-${TARGETARCH} /bin/oura
+RUN chmod +x /bin/oura
+RUN ln -s /bin/oura /oura
+
+ENTRYPOINT [ "oura" ]

.github/workflows/docker.yml

@@ -0,0 +1,109 @@
+name: Docker
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - "v*"
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        include:
+          - release_for: Linux-x86_64
+            build_on: ubuntu-22.04
+            target: x86_64-unknown-linux-gnu
+
+          - release_for: Linux-arm64
+            build_on: ubuntu-22.04-arm
+            target: aarch64-unknown-linux-gnu
+
+    runs-on: ${{ matrix.build_on }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Installs the toolchain + components pinned in rust-toolchain.toml.
+      - name: Install Rust toolchain
+        run: rustup show active-toolchain || rustup toolchain install
+
+      - name: Install Protoc
+        uses: arduino/setup-protoc@v3
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: docker-${{ matrix.target }}
+
+      - name: Run cargo build
+        run: cargo build --target ${{ matrix.target }} --all-features --locked --release
+
+      - name: Rename binary
+        run: mv target/${{ matrix.target }}/release/oura oura-${{ matrix.release_for }}
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: binaries-${{ matrix.release_for }}
+          path: oura-${{ matrix.release_for }}
+
+  docker:
+    runs-on: ubuntu-latest
+    needs: [build]
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/txpipe/oura
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=raw,value=stable,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
+            type=semver,pattern=v{{major}},enable=${{ startsWith(github.ref, 'refs/tags/v') }}
+            type=semver,pattern=v{{major}}.{{minor}},enable=${{ startsWith(github.ref, 'refs/tags/v') }}
+            type=semver,pattern=v{{version}},enable=${{ startsWith(github.ref, 'refs/tags/v') }}
+            type=sha
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Download artifacts
+        uses: actions/download-artifact@v4
+        with:
+          pattern: binaries-*
+          merge-multiple: true
+          path: .github/image/bin
+
+      # Rename the artifact so the suffix matches the value Docker uses for
+      # TARGETARCH (amd64), keeping the Dockerfile COPY simple. arm64 already
+      # matches.
+      - name: Rename artifacts
+        run: mv .github/image/bin/oura-Linux-x86_64 .github/image/bin/oura-Linux-amd64
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .github/image
+          platforms: linux/arm64,linux/amd64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Cargo.toml

@@ -23,6 +23,11 @@ hydra = ["tungstenite", "tokio-tungstenite", "futures-util", "bytes"]
 # elasticsearch = auto feature flag
 # kafka = auto feature flag
 
+# Features enabled in the cargo-dist released binaries (installers, archives).
+# u5c (utxorpc) ships by default; ~+2.2 MB stripped over the base binary.
+[package.metadata.dist]
+features = ["u5c"]
+
 [dependencies]
 pallas = { version = "1.1", features = ["hardano"] }
 # pallas = { path = "../pallas/pallas", features = ["hardano"] }