feat: add Docker Compose configuration for all services

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.env.example

@@ -0,0 +1,13 @@
+# Database
+DB_PASSWORD=your_secure_password_here
+
+# JWT Authentication
+JWT_SECRET=your_jwt_secret_key_here
+
+# Korea Investment & Securities OpenAPI
+KIS_APP_KEY=your_kis_app_key
+KIS_APP_SECRET=your_kis_app_secret
+KIS_ACCOUNT_NO=your_account_number
+
+# DART OpenAPI (Financial Statements)
+DART_API_KEY=your_dart_api_key

backend/Dockerfile

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+FROM python:3.14-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    gcc \
+    libpq-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Python dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Expose port
+EXPOSE 8000
+
+# Run the application
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

docker-compose.yml

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+version: '3.8'
+
+services:
+  postgres:
+    image: postgres:15-alpine
+    container_name: galaxy-po-db
+    environment:
+      POSTGRES_USER: galaxy
+      POSTGRES_PASSWORD: ${DB_PASSWORD:-devpassword}
+      POSTGRES_DB: galaxy_po
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    ports:
+      - "5432:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U galaxy -d galaxy_po"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    container_name: galaxy-po-backend
+    environment:
+      DATABASE_URL: postgresql://galaxy:${DB_PASSWORD:-devpassword}@postgres:5432/galaxy_po
+      JWT_SECRET: ${JWT_SECRET:-dev-jwt-secret-change-in-production}
+      KIS_APP_KEY: ${KIS_APP_KEY:-}
+      KIS_APP_SECRET: ${KIS_APP_SECRET:-}
+      DART_API_KEY: ${DART_API_KEY:-}
+    ports:
+      - "8000:8000"
+    depends_on:
+      postgres:
+        condition: service_healthy
+    volumes:
+      - ./backend:/app
+    command: uvicorn app.main:app --host 0.0.0.0 --port 8000 --reload
+
+  frontend:
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile
+    container_name: galaxy-po-frontend
+    environment:
+      NEXT_PUBLIC_API_URL: http://localhost:8000
+    ports:
+      - "3000:3000"
+    depends_on:
+      - backend
+    volumes:
+      - ./frontend:/app
+      - /app/node_modules
+      - /app/.next
+
+volumes:
+  postgres_data:

frontend/Dockerfile

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+FROM node:24-alpine
+
+WORKDIR /app
+
+# Install dependencies
+COPY package*.json ./
+RUN npm ci
+
+# Copy application code
+COPY . .
+
+# Expose port
+EXPOSE 3000
+
+# Development command
+CMD ["npm", "run", "dev"]