Dockerize client, server, and postgres database for production with container healthchecks

server/Dockerfile

@@ -0,0 +1,48 @@
+# --- Build Stage ---
+FROM node:20-alpine AS builder
+WORKDIR /app
+RUN apk add --no-cache openssl libc6-compat
+
+# Copy package configurations
+COPY package*.json ./
+
+# Install all dependencies (including devDependencies for tsc)
+RUN npm ci
+
+# Copy Prisma schema and generate Client code
+COPY prisma ./prisma
+RUN npx prisma generate
+
+# Copy source and compile TypeScript
+COPY src ./src
+COPY tsconfig.json ./
+RUN npm run build
+
+# --- Production Runner Stage ---
+FROM node:20-alpine
+WORKDIR /app
+RUN apk add --no-cache openssl libc6-compat
+
+# Copy package configurations
+COPY package*.json ./
+
+# Install only production dependencies
+RUN npm ci --omit=dev
+
+# Copy generated Prisma Client from builder stage
+COPY --from=builder /app/node_modules/@prisma/client ./node_modules/@prisma/client
+COPY --from=builder /app/node_modules/.prisma ./node_modules/.prisma
+
+# Copy built code and runtime configs
+COPY --from=builder /app/dist ./dist
+COPY prisma ./prisma
+
+# Expose backend PORT
+EXPOSE 5000
+
+# Health check utilizing native http module to query the backend health API (which queries PG database)
+HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
+  CMD node -e "const http = require('http'); http.get('http://localhost:5000/api/health', (res) => { process.exit(res.statusCode === 200 ? 0 : 1); }).on('error', () => process.exit(1));"
+
+# Launch backend Express server
+CMD ["node", "dist/index.js"]

server/package.json

@@ -14,13 +14,13 @@
     "@simplewebauthn/server": "^9.0.3",
     "cors": "^2.8.5",
     "dotenv": "^16.4.5",
-    "express": "^4.19.2"
+    "express": "^4.19.2",
+    "prisma": "^5.10.2"
   },
   "devDependencies": {
     "@types/cors": "^2.8.17",
     "@types/express": "^4.17.21",
     "@types/node": "^20.11.24",
-    "prisma": "^5.10.2",
     "tsx": "^4.7.1",
     "typescript": "^5.3.3"
   }

server/src/index.ts

@@ -4,6 +4,7 @@ import dotenv from 'dotenv'
 import authRouter from './routes/auth.js'
 import logbooksRouter from './routes/logbooks.js'
 import syncRouter from './routes/sync.js'
+import { prisma } from './db.js'
 
 dotenv.config()
 
@@ -19,12 +20,24 @@ app.use('/api/logbooks', logbooksRouter)
 app.use('/api/sync', syncRouter)
 
 // Health check endpoint
-app.get('/api/health', (req, res) => {
-  res.json({
-    status: 'ok',
-    timestamp: new Date().toISOString(),
-    service: 'Kapteins Daagbox Backend'
-  })
+app.get('/api/health', async (req, res) => {
+  try {
+    await prisma.$queryRaw`SELECT 1`
+    res.json({
+      status: 'ok',
+      database: 'connected',
+      timestamp: new Date().toISOString(),
+      service: 'Kapteins Daagbox Backend'
+    })
+  } catch (err: any) {
+    res.status(500).json({
+      status: 'error',
+      database: 'disconnected',
+      error: err.message,
+      timestamp: new Date().toISOString(),
+      service: 'Kapteins Daagbox Backend'
+    })
+  }
 })
 
 app.listen(PORT, () => {