Update Docker support for Bun-based build

[ichoosetoaccept]

Summary

The current Docker setup is inherited from the upstream fork and needs updating to work with our Bun-based build.

Current Issues

1. Dockerfile uses Node.js + npm instead of Bun

   • References build/ directory (we use dist/)
   • References package-lock.json (we use bun.lock)

2. docker-publish.yml pushes to upstream's Docker Hub (zereight050/gitlab-mcp)

   • Should push to our own registry (GitHub Container Registry recommended)

Proposed Changes

Dockerfile

FROM oven/bun:1 AS builder
WORKDIR /app
COPY package.json bun.lock ./
RUN bun install --frozen-lockfile
COPY . .
RUN bun run build

FROM oven/bun:1-slim AS release
WORKDIR /app
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/package.json ./
ENV NODE_ENV=production
EXPOSE 3002
ENTRYPOINT ["bun", "run", "dist/index.js"]

Workflow

• Push to ghcr.io/detailobsessed/efficient-gitlab-mcp
• Trigger on releases and manual dispatch
• Multi-arch support (amd64, arm64)

Use Cases

• Run MCP server in containerized CI/CD environments
• Users who prefer Docker over installing Bun
• Production HTTP transport deployments

Priority

Low - most MCP users run directly with Bun via stdio transport

[ichoosetoaccept]

Documentation: Upstream Docker Support (Removed)

Status: Docker support has been removed from this fork as we've switched to Bun runtime. This comment documents the upstream Docker configuration for future reference if we decide to re-implement it.

Original Docker Configuration

Dockerfile (Node.js-based)

Key Differences from Current Project

• Runtime: Node.js 22.21.1-alpine (vs Bun in current)
• Build Output: (vs in current)
• Package Manager: npm (vs bun in current)
• Multi-stage: Builder + release stages with caching

GitHub Actions Workflow

• Trigger: Release publication or manual dispatch
• Platforms: linux/amd64,linux/arm64
• Registry: Docker Hub (zereight050/gitlab-mcp)
• Tags: Semantic version + latest

Manual Build Script

Located in :

• Version validation against git tags
• Multi-platform build with buildx
• Automated tagging: /gitlab-mcp:latest and /gitlab-mcp:${VERSION}

Implementation Considerations for Future Docker Support

If re-adding Docker support for this Bun-based fork:

1. Runtime Change: Need to use Bun base image or install Bun in Node.js image
2. Build Process: Update to use bun build instead of npm build
3. Output Path: Change from build/ to dist/
4. Entry Point: Update to bun run dist/index.js
5. Dependencies: Use bun install instead of npm

Potential Dockerfile for Bun-based Fork

This documentation preserves the upstream implementation details while acknowledging the architectural changes in this fork.