Docker Build Fix

Issues Fixed

1. Database COPY Error

The Docker build was failing with:

ERROR: failed to solve: failed to compute cache key: failed to calculate checksum of ref: "/data/nodes.db": not found

2. Missing Dockerfile.nginx

ERROR: failed to solve: failed to read dockerfile: open Dockerfile.nginx: no such file or directory

3. npm ci Production Flag

ERROR: failed to solve: process "/bin/sh -c npm ci --only=production && npm cache clean --force" did not complete successfully: exit code: 1

Root Causes & Solutions

1. Invalid COPY Syntax

Docker's COPY command doesn't support shell operators like 2>/dev/null || true.

Solution: Removed the problematic COPY command and created data directory with RUN.

2. Dockerfile.nginx Not Yet Implemented

The GitHub Actions workflow referenced Dockerfile.nginx which is a Phase 2 feature.

Solution: Commented out the nginx build job until Phase 2 implementation.

3. Deprecated npm Flag

The --only=production flag is deprecated in newer npm versions.

Solution: Changed to --omit=dev which is the current syntax.

Changes Made

Dockerfile Changes

- # Pre-initialize database during build
- RUN mkdir -p /app/data && npm run rebuild || echo "Database will be initialized at runtime"
+ # Build TypeScript only
+ RUN npm run build

- # Copy pre-built database if it exists
- COPY --from=builder /app/data/nodes.db ./data/nodes.db 2>/dev/null || true
+ # Create data directory
+ RUN mkdir -p /app/data

- RUN npm ci --only=production && \
+ RUN npm ci --omit=dev && \
     npm cache clean --force

GitHub Actions Workflow Changes

- name: Log in to GitHub Container Registry
+ if: github.event_name != 'pull_request'
  uses: docker/login-action@v3

# Commented out nginx build until Phase 2
- build-nginx:
-   name: Build nginx-enhanced Docker Image
+ # build-nginx:
+ #   name: Build nginx-enhanced Docker Image

Result

✅ Docker build now succeeds ✅ Database initialization happens at container startup ✅ GitHub Actions workflow will work properly ✅ No manual intervention required

Testing

# Build locally
docker build -t n8n-mcp:test .

# Run and verify
docker run -d --name test -e MCP_MODE=http -e AUTH_TOKEN=test -p 3000:3000 n8n-mcp:test
docker logs test
curl http://localhost:3000/health

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