fix(blockchain-service): standardize Dockerfile with other services

- Use node:20-slim instead of alpine for OpenSSL compatibility
- Add startup script with prisma migrate/push
- Increase healthcheck start-period to 60s
- Add non-root user for security

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/blockchain-service/Dockerfile

@@ -1,54 +1,83 @@
-# Build stage
+# =============================================================================
+# Blockchain Service Dockerfile
+# =============================================================================
+
+# Build stage - use Alpine for smaller build context
 FROM node:20-alpine AS builder
 
 WORKDIR /app
 
 # Copy package files
 COPY package*.json ./
+COPY tsconfig*.json ./
+COPY nest-cli.json ./
+
+# Copy Prisma schema
 COPY prisma ./prisma/
 
 # Install dependencies
 RUN npm ci
 
-# Generate Prisma client
-RUN npx prisma generate
+# Generate Prisma client (dummy DATABASE_URL for build time only)
+RUN DATABASE_URL="postgresql://user:pass@localhost:5432/db" npx prisma generate
 
 # Copy source code
-COPY . .
+COPY src ./src
 
-# Build
+# Build TypeScript
 RUN npm run build
 
-# Production stage
-FROM node:20-alpine AS production
+# Verify build output exists
+RUN ls -la dist/ && test -f dist/main.js
+
+# Production stage - use Debian slim for OpenSSL compatibility
+FROM node:20-slim
 
 WORKDIR /app
 
-# Install OpenSSL for Prisma and curl for healthcheck
-RUN apk add --no-cache openssl curl
-
-# Copy package files
-COPY package*.json ./
-COPY prisma ./prisma/
+# Install OpenSSL and curl for health checks
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    openssl \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
 
 # Install production dependencies only
+COPY package*.json ./
 RUN npm ci --only=production
 
-# Generate Prisma client
-RUN npx prisma generate
+# Copy Prisma schema and generate client
+COPY prisma ./prisma/
+RUN DATABASE_URL="postgresql://user:pass@localhost:5432/db" npx prisma generate
 
-# Copy built application
+# Copy built files
 COPY --from=builder /app/dist ./dist
 
-# Set environment
+# Create startup script that runs migrations before starting the app
+RUN echo '#!/bin/sh\n\
+set -e\n\
+echo "Running database migrations..."\n\
+npx prisma migrate deploy || npx prisma db push --accept-data-loss\n\
+echo "Starting application..."\n\
+exec node dist/main.js\n' > /app/start.sh && chmod +x /app/start.sh
+
+# Create non-root user
+RUN groupadd -g 1001 nodejs && \
+    useradd -u 1001 -g nodejs nestjs
+
+# Change ownership of app directory
+RUN chown -R nestjs:nodejs /app
+
+# Switch to non-root user
+USER nestjs
+
 ENV NODE_ENV=production
 
 # Expose port
 EXPOSE 3012
 
 # Health check
-HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+HEALTHCHECK --interval=30s --timeout=3s --start-period=60s --retries=3 \
   CMD curl -f http://localhost:3012/api/v1/health || exit 1
 
-# Start application with database migration
-CMD ["sh", "-c", "npx prisma db push --skip-generate && node dist/main.js"]
+# Start service with migration
+CMD ["/app/start.sh"]