v3.0.0 - GitHub Container Registry Migration

🚀 Major Release: Migration to GitHub Container Registry

This is a major release that migrates the action from Docker Hub to GitHub Container Registry (GHCR) with significant improvements including multiplatform support, security enhancements, and performance optimizations.

💥 Breaking Changes

• Action reference changed: Use youscan/gitactions-slack-notification@3.0.0 instead of bryannice/gitactions-slack-notification@2.0.0
• Docker image location: Now hosted at ghcr.io/youscan/gitactions-slack-notification
• No Docker Hub credentials needed: Uses GitHub's built-in GITHUB_TOKEN for authentication

✨ What's New

🌍 Multiplatform Support

• Native support for both linux/amd64 and linux/arm64 platforms
• Works seamlessly on Apple Silicon Macs (M1/M2/M3)
• Full support for ARM-based servers and cloud instances
• Automatic platform detection and selection

🔒 Security Improvements

• Distroless base image: Minimal attack surface with gcr.io/distroless/static:nonroot
• Static binary compilation: No dynamic dependencies (CGO_ENABLED=0)
• Non-root user: Runs as user 65532:65532 for enhanced security
• Significantly smaller image size

⚡ Performance Optimizations

• Faster builds: Optimized cross-compilation with Buildx platform variables
• Removed unnecessary flags: Eliminated -a flag that forced rebuilding all packages
• Efficient multiplatform builds: Proper TARGETOS and TARGETARCH usage
• Build time: ~3s for arm64, ~14s for amd64

📦 Dependency Updates

• Updated Golang: 1.15.6 → 1.25.3 (major version upgrade)
• Updated base images: Golang 1.25.3, Distroless static
• Deprecated command fixes: Replaced ::set-output with $GITHUB_OUTPUT
• Updated GitHub Actions: All workflow actions updated to latest versions
• Added Dependabot: Automated dependency updates configured

📦 Container Images

Multi-arch images are now available at:

• ghcr.io/youscan/gitactions-slack-notification:3.0.0
• ghcr.io/youscan/gitactions-slack-notification:latest

Supported Platforms:

• linux/amd64 (Intel/AMD x86_64)
• linux/arm64 (Apple Silicon, ARM servers)

🔄 Migration Guide

Update your workflow file from:

- uses: bryannice/gitactions-slack-notification@2.0.0

To:

- uses: youscan/gitactions-slack-notification@3.0.0

No other changes required! All environment variables remain the same.

📝 Full Changelog

Commits in this release:

• perf: optimize multiplatform build with proper cross-compilation
• feat: add multiplatform Docker image support
• fix: use distroless base image and static binary
• fix: correct binary path in Docker image
• docs: update CHANGELOG for 3.0.0 with complete changes
• chore(deps): bump alpine from 3.12 to 3.22 in /build/docker
• chore(deps): bump golang from 1.15.6 to 1.25.3 in /build/docker
• refactor: simplify Dockerfile and remove build-arg complexity
• fix: add packages write permission to CD workflow
• chore: prepare release 3.0.0

🙏 Contributors

This release was made possible by:

• Original author: Bryan Nice (@bryannice)
• Fork maintainer: YouScan (@youscan)
• AI Assistant: Claude (@claude)

🤖 Generated with Claude Code