add deploy

backend/Dockerfile

@@ -0,0 +1,48 @@
+# Build stage
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install ALL dependencies (including devDependencies for build)
+RUN npm install --include=dev
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN npm run build
+
+# Production stage
+FROM node:20-alpine
+
+WORKDIR /app
+
+# Install only production dependencies
+COPY package*.json ./
+RUN npm install --only=production && npm cache clean --force
+
+# Copy built application from builder
+COPY --from=builder /app/dist ./dist
+
+# Create non-root user
+RUN addgroup -g 1001 -S nodejs && \
+    adduser -S nestjs -u 1001
+
+# Change ownership
+RUN chown -R nestjs:nodejs /app
+
+# Switch to non-root user
+USER nestjs
+
+# Expose port
+EXPOSE 4001
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=40s \
+  CMD node -e "require('http').get('http://localhost:4001/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"
+
+# Start the application
+CMD ["node", "dist/main"]