What If You Could EASILY Dockerize Your Python Flask App with Nginx in Minutes? (3/3)
🚀 Dockerize Flask App + Nginx Load Balancer in 9 MINS! VS Code Terminal Walkthrough
2 Flask servers (172.17.0.2:5000, 172.17.0.3:5000) behind Nginx round-robin LB (8080). Custom Dockerfiles + static IPs. main.py shows container hostname live!
🔥 Complete project from scratch:
• python:3.9 + venv + pip install flask
• Dockerfile: COPY . /app + WORKDIR /app
• docker build -t app:2.0 . --ip 172.17.0.2
• Nginx upstream 172.17.0.2:5000 172.17.0.3:5000
• Load test: localhost:8080 (IP rotates!)
⏰ Timestamps:
00:00 Quick Overview
00:40 main.py Flask (socket.gethostname())
02:00 Dockerfile breakdown (venv setup)
04:00 docker build app:1.0 → app:2.0 (socket fix)
05:14 docker run --ip 172.17.0.2 -p 5000:5000
06:29 nginx.conf round-robin config
07:05 Nginx Dockerfile (nginx:latest)
07:32 docker run lb:1.0 -p 8080:8080
→ Refresh localhost:8080 → Watch IPs switch!
💾 Production-ready GitHub structure (app/ + lb/)
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