add workflow

Backend/Dockerfile

@@ -0,0 +1,55 @@
+# Build stage
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+COPY pnpm-lock.yaml* ./
+
+# Install pnpm and dependencies
+RUN npm install -g pnpm && pnpm install --frozen-lockfile
+
+# Copy source code
+COPY . .
+
+# Generate Prisma client
+RUN pnpm prisma:generate
+
+# Build application
+RUN pnpm build
+
+# Production stage
+FROM node:20-alpine AS production
+
+WORKDIR /app
+
+# Install pnpm
+RUN npm install -g pnpm
+
+# Copy package files
+COPY package*.json ./
+COPY pnpm-lock.yaml* ./
+
+# Install production dependencies only
+RUN pnpm install --prod --frozen-lockfile
+
+# Copy built files from builder
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/node_modules/.prisma ./node_modules/.prisma
+COPY --from=builder /app/prisma ./prisma
+COPY --from=builder /app/public ./public
+
+# Set environment
+ENV NODE_ENV=production
+ENV PORT=4000
+
+# Expose port
+EXPOSE 4000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost:4000/health || exit 1
+
+# Start application
+CMD ["node", "dist/server.js"]