feat: dockerhub release

Author: tilaven

.dockerignore

@@ -0,0 +1,4 @@
+.git
+.gitignore
+target
+**/*.rs.bk

.github/workflows/docker.yml

@@ -0,0 +1,90 @@
+name: docker
+
+on:
+  push:
+    tags:
+      - "v*"
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "Release tag (e.g. v1.2.3)"
+        required: true
+        type: string
+
+jobs:
+  linux:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    env:
+      IMAGE: ${{ secrets.DOCKERHUB_USERNAME }}/diff-coverage
+      ALPINE_VERSION: "3.20"
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set version
+        run: |
+          TAG="${{ inputs.tag }}"
+          if [ -z "$TAG" ]; then TAG="$GITHUB_REF_NAME"; fi
+          VERSION="${TAG#v}"
+          echo "TAG=$TAG" >> "$GITHUB_ENV"
+          echo "VERSION=$VERSION" >> "$GITHUB_ENV"
+      - name: Wait for release binaries
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          set -euo pipefail
+          for i in {1..60}; do
+            assets="$(gh release view "$TAG" --json assets --jq '.assets[].name' || true)"
+            if echo "$assets" | grep -q "diff-coverage-$TAG-x86_64-unknown-linux-musl" \
+              && echo "$assets" | grep -q "diff-coverage-$TAG-aarch64-unknown-linux-musl"; then
+              exit 0
+            fi
+            echo "Waiting for release assets for $TAG..."
+            sleep 10
+          done
+          echo "Release assets not found for $TAG"
+          exit 1
+      - name: Download release binaries
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          mkdir -p dist
+          gh release download "$TAG" --pattern "diff-coverage-$TAG-x86_64-unknown-linux-musl" --dir dist
+          gh release download "$TAG" --pattern "diff-coverage-$TAG-aarch64-unknown-linux-musl" --dir dist
+          mv "dist/diff-coverage-$TAG-x86_64-unknown-linux-musl" "dist/diff-coverage-amd64"
+          mv "dist/diff-coverage-$TAG-aarch64-unknown-linux-musl" "dist/diff-coverage-arm64"
+          chmod +x dist/diff-coverage-amd64 dist/diff-coverage-arm64
+      - uses: docker/setup-buildx-action@v3
+      - uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.IMAGE }}
+          tags: |
+            type=raw,value=latest
+            type=semver,pattern={{version}},value=${{ env.VERSION }}
+            type=semver,pattern={{major}},value=${{ env.VERSION }}
+            type=semver,pattern={{major}}.{{minor}},value=${{ env.VERSION }}
+            type=raw,value=alpine
+            type=raw,value=alpine-${{ env.ALPINE_VERSION }}
+            type=semver,pattern={{version}},value=${{ env.VERSION }},suffix=-alpine
+            type=semver,pattern={{major}},value=${{ env.VERSION }},suffix=-alpine
+            type=semver,pattern={{major}}.{{minor}},value=${{ env.VERSION }},suffix=-alpine
+            type=semver,pattern={{version}},value=${{ env.VERSION }},suffix=-alpine-${{ env.ALPINE_VERSION }}
+            type=semver,pattern={{major}},value=${{ env.VERSION }},suffix=-alpine-${{ env.ALPINE_VERSION }}
+            type=semver,pattern={{major}}.{{minor}},value=${{ env.VERSION }},suffix=-alpine-${{ env.ALPINE_VERSION }}
+      - name: Build and push (linux)
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Dockerfile.release
+          platforms: linux/amd64,linux/arm64
+          push: true
+          build-args: |
+            ALPINE_VERSION=${{ env.ALPINE_VERSION }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

CHANGELOG.md

@@ -1,8 +1,10 @@
-# 0.2.0 - 2027-02-10
+# 0.2.1 - 2026-02-10
 
 Added
 - Dockerhub release 
 
+# 0.2.0 - 2026-02-10
+
 Changed
 - Output binaries in releases instead of archives with README
 

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "diff-coverage"
-version = "0.2.0"
+version = "0.2.1"
 edition = "2021"
 description = "Diff-coverage, supercharged in Rust. Fast, memory-efficient coverage on changed lines for CI."
 license = "MIT"

Cargo.toml

@@ -0,0 +1,9 @@
+# syntax=docker/dockerfile:1.6
+ARG ALPINE_VERSION=3.20
+ARG TARGETARCH
+
+FROM alpine:${ALPINE_VERSION}
+ARG TARGETARCH
+RUN apk add --no-cache ca-certificates
+COPY dist/diff-coverage-${TARGETARCH} /usr/local/bin/diff-coverage
+ENTRYPOINT ["diff-coverage"]