V5 + theia Docker Build Session

Date: 2025-10-12 Session Focus: Local Docker build testing for combined V5 + theia deployment Status: 🟡 Ready to build - Architecture verified, Docker installed

🎯 Session Objectives

✅ Understand V5 + theia combined architecture
✅ Verify Docker installation
✅ Verify all build files present
🔲 Execute local Docker build (~27 minutes)
🔲 Test container startup and health
🔲 Verify V5 frontend and theia backend work
🔲 Deploy to GCP Cloud Build
🔲 Deploy to GKE cluster

📐 Architecture Overview

The Two-Layer System

┌─────────────────────────────────────────────────────────┐
│  Docker Container (Port 80)                              │
│                                                           │
│  ┌─────────────────────────────────────────────────┐   │
│  │  NGINX (Reverse Proxy)                           │   │
│  │  ├─→ / → V5 Frontend (static files)             │   │
│  │  └─→ /theia → theia IDE (proxy to :3000)        │   │
│  └─────────────────────────────────────────────────┘   │
│                                                           │
│  ┌─────────────────────────────────────────────────┐   │
│  │  Node.js (Port 3000)                             │   │
│  │  └─→ Eclipse theia 1.65                          │   │
│  │      ├─ Monaco editor                            │   │
│  │      ├─ terminal (xterm.js + WebSocket)          │   │
│  │      ├─ File Explorer                            │   │
│  │      └─ AI Chat (Coditect branding)              │   │
│  └─────────────────────────────────────────────────┘   │
│                                                           │
└─────────────────────────────────────────────────────────┘

Component Breakdown

1. V5 Frontend (React SPA)

Purpose: User experience layer - navigation, branding, settings, documentation

Location: dist/ (pre-built, 1.2 MB)

Contents:

dist/
├── index.html (0.6 KB)
└── assets/
    ├── index-BrpMVn2p.js (1.2 MB) - Complete React app
    ├── index-_j0wQpi_.css (5 KB) - Apple-quality design system
    └── logo.png (79 KB)

Key Features:

28 pages (Login, Settings, Documentation, FAQ, etc.)
Apple-quality design system (500+ design tokens)
Mobile-first (56px touch targets)
Embeds theia in workspace tab via iframe

Built with:

React 18.3 + TypeScript 5.3
Vite 5.4 (bundler)
Chakra UI 2.8 (components)
Zustand 4.4 (state management)

2. Eclipse theia Backend (Full IDE)

Purpose: IDE engine - code editing, terminal, file operations

Location: theia-app/ (built during Docker build, ~500 MB)

Contents:

theia-app/
├── src/browser/
│   ├── coditect-branding-frontend-module.ts
│   ├── coditect-chat-module.ts
│   └── coditect-chat-welcome-provider.tsx (custom branding)
├── lib/ (compiled TypeScript)
├── src-gen/ (generated theia code)
│   └── backend/main.js (theia entry point)
├── plugins/ (39 VS Code extensions)
└── node_modules/ (runtime dependencies)

Key Features:

Eclipse theia 1.65 (EPL-2.0 license)
Monaco editor (same as VS Code)
terminal (xterm.js with WebSocket)
AI Chat with Coditect branding
MCP/Ollama/OpenAI integration
39 VS Code extensions (Python, ESLint, Rust Analyzer, etc.)

Custom Branding:

Welcome message: "Coditect AI Agents"
Custom robot logo (SVG)
Agent instructions: @Coditect-Code-Generator, @Coditect-UI-Designer, @Coditect-Code-Reviewer

🐳 Docker Build Strategy

Why dockerfile.local-test?

Problem with dockerfile.combined:

Stage 1: Build V5 Frontend
├─ npm ci (install deps including @theia/ffmpeg)
└─ ❌ Error: @theia/ffmpeg requires Python for native compilation

Solution with dockerfile.local-test:

Stage 1: Build theia Backend (~25 minutes)
├─ npm ci (theia deps only)
├─ npm run prepare (Webpack build)
└─ ✅ Success

Stage 2: Runtime (~2 minutes)
├─ Install NGINX
├─ COPY dist/ (pre-built V5 - no build needed!)
├─ COPY theia/ (from stage 1)
└─ ✅ Success

Total: ~27 minutes

Key Insight: By using pre-built dist/, we avoid Python dependency issues and reduce build time.

🔧 Build Files Reference

1. dockerfile.local-test (Primary Build File)

Location: /home/hal/v4/PROJECTS/t2/dockerfile.local-test

Strategy: Multi-stage build

Stage 1: Build theia (node:20)
Stage 2: Runtime (node:20-slim + NGINX)

Key Steps:

# Stage 1: Build theia
FROM node:20 AS theia-builder
COPY theia-app/package*.json ./
RUN npm ci  # ~10 minutes
COPY theia-app/src ./src
RUN npm run prepare  # ~15 minutes

# Stage 2: Runtime
FROM node:20-slim
RUN apt-get install -y nginx curl
COPY dist /app/v5-frontend  # Pre-built V5!
COPY --from=theia-builder /app/theia /app/theia
COPY nginx-combined.conf /etc/nginx/sites-available/default
COPY start-combined.sh /start.sh
CMD ["/start.sh"]

2. nginx-combined.conf (Routing Configuration)

Location: /home/hal/v4/PROJECTS/t2/nginx-combined.conf

Purpose: Route traffic between V5 and theia

Key Routes:

# Route 1: V5 Frontend (SPA)
location / {
    root /app/v5-frontend;
    try_files $uri $uri/ /index.html;
}

# Route 2: theia IDE (proxy)
location /theia {
    rewrite ^/theia/(.*) /$1 break;
    proxy_pass http://localhost:3000;

    # WebSocket support (CRITICAL for terminal)
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
}

# Route 3: Health check
location /health {
    return 200 "healthy\n";
}

Why WebSocket Config Matters:

theia terminal uses WebSocket for I/O
Without Upgrade headers, terminal disconnects
NGINX must upgrade HTTP → WebSocket

3. start-combined.sh (Startup Script)

Location: /home/hal/v4/PROJECTS/t2/start-combined.sh

Purpose: Start both NGINX and theia processes

Process Flow:

Start NGINX (background, PID tracked)
Wait 2 seconds for NGINX startup
Start theia on port 3000 (background, PID tracked)
Log startup confirmation
Wait for both processes (wait -n)
If one dies, kill the other (graceful shutdown)

Signal Handling:

Traps SIGTERM/SIGINT
Sends TERM to both processes
Waits for clean shutdown

🚀 Build Commands

Prerequisites Check

# Verify Docker installed
docker --version
# Expected: Docker version 28.5.1, build e180ab8

# Verify Docker daemon accessible
docker ps
# Should show running containers

# Verify build files exist
ls -la dockerfile.local-test nginx-combined.conf start-combined.sh
# All should exist

# Verify V5 build exists
ls -la dist/
# Should show index.html and assets/

Build Command

# Navigate to project root
cd /home/hal/v4/PROJECTS/t2

# Build Docker image (foreground - see all output)
docker build -f dockerfile.local-test -t coditect-combined:test .

# OR build with log file (background-friendly)
docker build -f dockerfile.local-test -t coditect-combined:test . 2>&1 | tee docker-build.log

# Expected duration: ~27 minutes
# Expected output size: ~1.5 GB

Build Progress Indicators

Stage 1: theia Builder (~25 minutes)

Step 1/25 : FROM node:20 AS theia-builder
Step 5/25 : RUN npm ci
 # Progress: Installing 1500+ packages (~10 minutes)
Step 8/25 : RUN npm run prepare
 # Progress: Webpack compilation (~15 minutes)
 # Watch for: "@theia/cli: Build completed successfully"

Stage 2: Runtime (~2 minutes)

Step 15/25 : FROM node:20-slim
Step 18/25 : RUN apt-get install -y nginx curl
Step 20/25 : COPY dist /app/v5-frontend
Step 21/25 : COPY --from=theia-builder /app/theia /app/theia
Step 25/25 : CMD ["/start.sh"]
Successfully built <image_id>
Successfully tagged coditect-combined:test

🧪 Testing Commands

1. Run Container Locally

# Start container (port 8080 mapped to container port 80)
docker run -d -p 8080:80 --name coditect-test coditect-combined:test

# Check startup logs
docker logs -f coditect-test

# Expected output:
# ======================================
# Starting Coditect V5 Combined Service
# ======================================
# Starting NGINX...
# Starting theia IDE on port 3000...
#
# ✓ NGINX running (PID: 12)
# ✓ theia running (PID: 34)
#
# Services:
#   - V5 Frontend: http://localhost/
#   - theia IDE:   http://localhost/theia
#   - Health:      http://localhost/health

2. Test V5 Frontend

# Test HTML loads
curl http://localhost:8080/
# Expected: HTML with <div id="root"> and <script src="/assets/index-*.js">

# Test static assets load
curl -I http://localhost:8080/assets/index-BrpMVn2p.js
# Expected: HTTP/1.1 200 OK, Content-Type: application/javascript

# Test SPA routing
curl http://localhost:8080/settings
# Expected: Same index.html (React Router handles routing)

3. Test theia Backend

# Test theia HTML loads
curl http://localhost:8080/theia/
# Expected: HTML with theia application structure

# Test theia is responsive
curl -I http://localhost:8080/theia/
# Expected: HTTP/1.1 200 OK

# Check theia process is running
docker exec coditect-test ps aux | grep node
# Expected: node src-gen/backend/main.js --hostname=0.0.0.0 --port=3000

4. Test Health Check

# Test health endpoint
curl http://localhost:8080/health
# Expected: "healthy"

# Test health check from inside container
docker exec coditect-test curl -f http://localhost/health
# Expected: Exit code 0 (success)

5. Browser Testing

Open browser and test:

V5 Frontend:

http://localhost:8080/ → V5 UI loads
Header shows "Coditect AI"
Footer shows copyright
Navigation works (Login, Settings, Documentation, etc.)
Styles applied correctly (not broken CSS)

theia IDE:

Click "workspace" tab → Iframe loads
http://localhost:8080/theia → theia IDE appears
Monaco editor loads (can type in files)
File Explorer shows file tree
terminal opens and accepts input
terminal stays connected (WebSocket working)
AI Chat shows "Coditect AI Agents" welcome

WebSocket Test (from browser console):

// Open browser console (F12)
const ws = new WebSocket('ws://localhost:8080/theia/services');
ws.onopen = () => console.log('✅ WebSocket connected!');
ws.onerror = (e) => console.error('❌ WebSocket failed:', e);

🐛 Troubleshooting Guide

Build Failures

"npm ERR! gyp ERR! find Python"

Cause: dockerfile.combined has Python dependency issue Solution: Use dockerfile.local-test instead

"COPY failed: file not found: dist/"

Cause: V5 frontend not built Solution:

npm run prototype:build
ls -la dist/  # Verify dist/ exists

"npm ERR! network timeout"

Cause: npm registry connection issue Solution: Retry build (npm ci is idempotent)

"theia build failed: out of memory"

Cause: Insufficient RAM (theia needs ~4 GB) Solution:

# Check available memory
free -h
# Increase Docker memory limit if needed

Runtime Failures

Container starts but exits immediately

Debug:

docker logs coditect-test
# Check for errors in startup script

docker exec -it coditect-test /bin/bash
# Inspect container filesystem

ls -la /app/v5-frontend  # V5 files exist?
ls -la /app/theia        # theia files exist?
cat /etc/nginx/sites-available/default  # NGINX config correct?

NGINX fails to start

Debug:

docker exec coditect-test nginx -t
# Test NGINX config syntax

docker exec coditect-test cat /var/log/nginx/error.log
# Check NGINX error log

theia fails to start

Debug:

docker exec coditect-test ls -la /app/theia/src-gen/backend/main.js
# Entry point exists?

docker exec coditect-test node --version
# Node.js available?

docker exec coditect-test cat /app/theia/lib/package.json
# Dependencies installed?

Health check failing

Debug:

docker exec coditect-test curl -v http://localhost/health
# Verbose health check

docker exec coditect-test netstat -tuln | grep 80
# Port 80 listening?

docker exec coditect-test ps aux
# Both processes running?

Browser Issues

V5 loads but shows blank page

Cause: JavaScript error Debug:

Open browser console (F12)
Check for errors in console
Check Network tab for failed asset loads
Verify /assets/index-*.js returns 200 OK

theia iframe doesn't load

Cause: CORS or proxy issue Debug:

# Check NGINX proxy config
docker exec coditect-test cat /etc/nginx/sites-available/default | grep -A 10 "location /theia"

# Test proxy from inside container
docker exec coditect-test curl http://localhost:3000
# Should return theia HTML

terminal disconnects immediately

Cause: WebSocket not upgrading Debug:

# Check NGINX WebSocket config
docker exec coditect-test cat /etc/nginx/sites-available/default | grep -i upgrade

# Check NGINX error log for WebSocket issues
docker exec coditect-test tail -n 50 /var/log/nginx/error.log

📊 Build Metrics

Expected Timings

Stage	Operation	Duration
Stage 1	Pull node:20 base image	~1 min
	npm ci (theia deps)	~10 min
	npm run prepare (Webpack)	~15 min
	Stage 1 Total	~26 min
Stage 2	Pull node:20-slim	~30 sec
	Install NGINX + curl	~1 min
	Copy files	~10 sec
	Stage 2 Total	~2 min
Total		~28 min

Expected Sizes

Component	Size	Notes
V5 dist/	1.2 MB	Pre-built, copied as-is
theia source	~50 MB	TypeScript files
theia built	~500 MB	lib/, src-gen/, node_modules/
NGINX	~20 MB	Installed via apt-get
Final image	~1.5 GB	Compressed

Resource Requirements

During Build:

CPU: 2-4 cores
RAM: 4-6 GB (peak during Webpack)
Disk: 10 GB (intermediate layers)

During Runtime:

CPU: 0.5-1 core
RAM: 1-2 GB
Disk: 2 GB

✅ Success Criteria

Build Success

Docker build completes without errors
Final message: "Successfully tagged coditect-combined:test"
Image size: ~1.5 GB
Build time: 25-30 minutes

Runtime Success

Container starts without errors
Both processes show running PIDs
No errors in docker logs
Health check returns "healthy"

Functionality Success

V5 Frontend:

http://localhost:8080/ loads React app
Header, footer, navigation visible
Can navigate between pages
Styles applied correctly
No console errors

theia IDE:

http://localhost:8080/theia loads theia
Monaco editor responsive
File Explorer shows files
terminal opens
terminal accepts input
terminal stays connected (no disconnects)
AI Chat shows "Coditect AI Agents"

WebSocket:

terminal WebSocket connects
No disconnection errors in console
Can run commands and see output
Multiple terminal tabs work

🚀 Next Steps After Success

1. Clean Up Test Container

# Stop test container
docker stop coditect-test

# Remove test container
docker rm coditect-test

# (Optional) Remove test image
docker rmi coditect-combined:test

2. Update Cloud Build Config

File: cloudbuild-combined.yaml

Change Dockerfile reference:

steps:
  - name: 'gcr.io/cloud-builders/docker'
    args:
      - 'build'
      - '-f'
      - 'dockerfile.local-test'  # Changed from dockerfile.combined
      - '-t'
      - 'us-central1-docker.pkg.dev/$PROJECT_ID/coditect/coditect-combined:$BUILD_ID'
      - '.'

3. Deploy to Cloud Build

# Ensure gcloud authenticated
gcloud auth login 1@az1.ai
gcloud config set project serene-voltage-464305-n2

# Submit build to Cloud Build
gcloud builds submit \
  --config cloudbuild-combined.yaml \
  --project serene-voltage-464305-n2

# Monitor build
gcloud builds list --ongoing --project serene-voltage-464305-n2

# Expected duration: 30-35 minutes

4. Deploy to GKE

# Get GKE credentials
gcloud container clusters get-credentials codi-poc-e2-cluster \
  --zone us-central1-a \
  --project serene-voltage-464305-n2

# Apply Kubernetes manifests
kubectl apply -f k8s-combined-deployment.yaml

# Watch rollout
kubectl rollout status deployment/coditect-combined

# Get service URL
kubectl get ingress coditect-ingress

5. Verify Production

# Test V5 frontend
curl https://coditect.ai/
# Should return HTML

# Test theia
curl https://coditect.ai/theia
# Should return theia HTML

# Test health check
curl https://coditect.ai/health
# Should return "healthy"

6. Browser Testing (Production)

https://coditect.ai/ → V5 UI loads
Click "workspace" → theia loads
terminal works over WSS (secure WebSocket)
No mixed content errors
SSL certificate valid

📝 Session Checkpoint

Current State (2025-10-12 10:30 UTC)

Completed:

✅ V5 frontend built (dist/ folder ready)
✅ Deployment files created (dockerfile.local-test, nginx-combined.conf, start-combined.sh)
✅ Docker installed and verified (v28.5.1)
✅ Architecture understood and documented
✅ All build prerequisites verified

In Progress:

🔲 Local Docker build (~27 minutes remaining)

Pending:

🔲 Container testing (~5 minutes)
🔲 Cloud Build deployment (~35 minutes)
🔲 GKE deployment (~10 minutes)

Estimated Time to Production: ~77 minutes from now

Resume Command

If session is interrupted, resume with:

# Navigate to project
cd /home/hal/v4/PROJECTS/t2

# Check if build in progress
docker ps -a | grep coditect

# Resume build if needed
docker build -f dockerfile.local-test -t coditect-combined:test . 2>&1 | tee docker-build.log

# Or check build logs
tail -f docker-build.log

📚 Reference Documentation

Project Documentation

Main Instructions: /home/hal/v4/PROJECTS/t2/CLAUDE.md
Architecture: /home/hal/v4/PROJECTS/t2/docs/DEFINITIVE-V5-architecture.md
Deployment Architecture: /home/hal/v4/PROJECTS/t2/DEPLOYMENT-architecture.md
Checkpoint: /home/hal/v4/PROJECTS/t2/checkpoint-docker-setup.md

Build Files

Dockerfile: /home/hal/v4/PROJECTS/t2/dockerfile.local-test
NGINX Config: /home/hal/v4/PROJECTS/t2/nginx-combined.conf
Startup Script: /home/hal/v4/PROJECTS/t2/start-combined.sh
Cloud Build: /home/hal/v4/PROJECTS/t2/cloudbuild-combined.yaml
Kubernetes: /home/hal/v4/PROJECTS/t2/k8s-combined-deployment.yaml

Source Code

V5 Frontend: /home/hal/v4/PROJECTS/t2/src/
V5 Build: /home/hal/v4/PROJECTS/t2/dist/
theia App: /home/hal/v4/PROJECTS/t2/theia-app/
theia Branding: /home/hal/v4/PROJECTS/t2/theia-app/src/browser/

🎯 Decision Log

Decision 1: Use dockerfile.local-test

Date: 2025-10-12 Reason: Avoid Python dependency issue with @theia/ffmpeg Impact: 3 minutes faster build, simpler dependency chain Status: ✅ Adopted

Decision 2: Test Locally Before Cloud Build

Date: 2025-10-12 Reason: Catch issues early, save Cloud Build costs Impact: 27 minutes upfront, saves potential 50+ minutes debugging in cloud Status: ✅ In Progress

Decision 3: Combined Container (V5 + theia)

Date: 2025-10-12 Reason: Simpler architecture, lower cost, easier deployment Impact: Single deployment artifact, NGINX handles routing Status: ✅ Adopted

Last Updated: 2025-10-12 10:30 UTC Next Action: Execute docker build command Expected Completion: 2025-10-12 11:00 UTC (27 minutes)

🎯 Session Objectives​

📐 Architecture Overview​

The Two-Layer System​

Component Breakdown​

1. V5 Frontend (React SPA)​

2. Eclipse theia Backend (Full IDE)​

🐳 Docker Build Strategy​

Why dockerfile.local-test?​

🔧 Build Files Reference​

1. dockerfile.local-test (Primary Build File)​

2. nginx-combined.conf (Routing Configuration)​

3. start-combined.sh (Startup Script)​

🚀 Build Commands​

Prerequisites Check​

Build Command​

Build Progress Indicators​

🧪 Testing Commands​

1. Run Container Locally​

2. Test V5 Frontend​

3. Test theia Backend​

4. Test Health Check​

5. Browser Testing​

🐛 Troubleshooting Guide​

Build Failures​

"npm ERR! gyp ERR! find Python"​

"COPY failed: file not found: dist/"​

"npm ERR! network timeout"​

"theia build failed: out of memory"​

Runtime Failures​

Container starts but exits immediately​

NGINX fails to start​

theia fails to start​

Health check failing​

Browser Issues​

V5 loads but shows blank page​

theia iframe doesn't load​

terminal disconnects immediately​

📊 Build Metrics​

Expected Timings​

Expected Sizes​

Resource Requirements​

✅ Success Criteria​

Build Success​

Runtime Success​

Functionality Success​

🚀 Next Steps After Success​

1. Clean Up Test Container​

2. Update Cloud Build Config​

3. Deploy to Cloud Build​

4. Deploy to GKE​

5. Verify Production​

6. Browser Testing (Production)​

📝 Session Checkpoint​

Current State (2025-10-12 10:30 UTC)​

Resume Command​

📚 Reference Documentation​

Project Documentation​

Build Files​

Source Code​

🎯 Decision Log​

Decision 1: Use dockerfile.local-test​

Decision 2: Test Locally Before Cloud Build​

Decision 3: Combined Container (V5 + theia)​

🎯 Session Objectives

📐 Architecture Overview

The Two-Layer System

Component Breakdown

1. V5 Frontend (React SPA)

2. Eclipse theia Backend (Full IDE)

🐳 Docker Build Strategy

Why dockerfile.local-test?

🔧 Build Files Reference

1. dockerfile.local-test (Primary Build File)

2. nginx-combined.conf (Routing Configuration)

3. start-combined.sh (Startup Script)

🚀 Build Commands

Prerequisites Check

Build Command

Build Progress Indicators

🧪 Testing Commands

1. Run Container Locally

2. Test V5 Frontend

3. Test theia Backend

4. Test Health Check

5. Browser Testing

🐛 Troubleshooting Guide

Build Failures

"npm ERR! gyp ERR! find Python"

"COPY failed: file not found: dist/"

"npm ERR! network timeout"

"theia build failed: out of memory"

Runtime Failures

Container starts but exits immediately

NGINX fails to start

theia fails to start

Health check failing

Browser Issues

V5 loads but shows blank page

theia iframe doesn't load

terminal disconnects immediately

📊 Build Metrics

Expected Timings

Expected Sizes

Resource Requirements

✅ Success Criteria

Build Success

Runtime Success

Functionality Success

🚀 Next Steps After Success

1. Clean Up Test Container

2. Update Cloud Build Config

3. Deploy to Cloud Build

4. Deploy to GKE

5. Verify Production

6. Browser Testing (Production)

📝 Session Checkpoint

Current State (2025-10-12 10:30 UTC)

Resume Command

📚 Reference Documentation

Project Documentation

Build Files

Source Code

🎯 Decision Log

Decision 1: Use dockerfile.local-test

Decision 2: Test Locally Before Cloud Build

Decision 3: Combined Container (V5 + theia)