feat: docker-compose local dev environment (#510)

.env.dev.example

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+# Local dev environment — copy to .env and adjust as needed
+# docker compose -f docker-compose.dev.yml up
+
+# Server
+PORT=3000
+NODE_ENV=development
+CORS_ALLOWED_ORIGINS=http://localhost:3000,http://localhost:5173
+
+# Auth
+API_KEYS=dev-api-key
+JWT_SECRET=dev-secret-change-in-production
+
+# Database (matches docker-compose.dev.yml postgres service)
+DATABASE_URL=postgresql://paystream:paystream_dev@postgres:5432/paystream
+TESTNET_DATABASE_URL=postgresql://paystream:paystream_dev@postgres:5432/paystream
+MAINNET_DATABASE_URL=postgresql://paystream:paystream_dev@postgres:5432/paystream
+
+# Redis (matches docker-compose.dev.yml redis service)
+REDIS_URL=redis://redis:6379
+
+# Stellar
+STELLAR_NETWORK=testnet
+TESTNET_RPC_URL=https://soroban-testnet.stellar.org
+TESTNET_STREAM_CONTRACT_ID=
+TESTNET_TOKEN_CONTRACT_ID=
+MAINNET_RPC_URL=https://mainnet.stellar.validationcloud.io/v1/soroban/rpc
+MAINNET_STREAM_CONTRACT_ID=
+MAINNET_TOKEN_CONTRACT_ID=
+
+# AWS Secrets Manager (disabled locally)
+USE_AWS_SECRETS_MANAGER=false
+AWS_SECRETS_MANAGER_SECRET_NAME=paystream/secrets
+AWS_REGION=us-east-1
+
+# Rate limiting
+RATE_LIMIT_WINDOW_MS=900000
+RATE_LIMIT_MAX_REQUESTS=100
+
+# Logging
+LOG_LEVEL=info
+
+# Frontend
+VITE_API_URL=http://localhost:3000

api/Dockerfile.dev

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+FROM node:20-alpine
+WORKDIR /app
+COPY package*.json ./
+RUN npm install
+COPY . .
+EXPOSE 3000
+CMD ["node", "server.js"]

demo/Dockerfile.dev

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+FROM node:20-alpine
+WORKDIR /app
+COPY package*.json ./
+RUN npm install
+COPY . .
+EXPOSE 5173
+CMD ["npm", "run", "dev", "--", "--host", "0.0.0.0"]

docker-compose.dev.yml

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+services:
+  postgres:
+    image: postgres:15-alpine
+    environment:
+      POSTGRES_DB: paystream
+      POSTGRES_USER: paystream
+      POSTGRES_PASSWORD: paystream_dev
+    ports: ['5432:5432']
+    volumes: [postgres_data:/var/lib/postgresql/data]
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -U paystream']
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  redis:
+    image: redis:7-alpine
+    ports: ['6379:6379']
+    volumes: [redis_data:/data]
+    healthcheck:
+      test: ['CMD', 'redis-cli', 'ping']
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  api:
+    build:
+      context: ./api
+      dockerfile: Dockerfile.dev
+    ports: ['3000:3000']
+    environment:
+      NODE_ENV: development
+      PORT: 3000
+      DATABASE_URL: postgresql://paystream:paystream_dev@postgres:5432/paystream
+      REDIS_URL: redis://redis:6379
+      CORS_ALLOWED_ORIGINS: http://localhost:3000,http://localhost:5173
+      JWT_SECRET: ${JWT_SECRET:-dev-secret-change-in-production}
+      API_KEYS: ${API_KEYS:-dev-api-key}
+      STELLAR_NETWORK: ${STELLAR_NETWORK:-testnet}
+      TESTNET_RPC_URL: ${TESTNET_RPC_URL:-https://soroban-testnet.stellar.org}
+      TESTNET_STREAM_CONTRACT_ID: ${TESTNET_STREAM_CONTRACT_ID:-}
+      TESTNET_TOKEN_CONTRACT_ID: ${TESTNET_TOKEN_CONTRACT_ID:-}
+      LOG_LEVEL: ${LOG_LEVEL:-info}
+      RATE_LIMIT_WINDOW_MS: ${RATE_LIMIT_WINDOW_MS:-900000}
+      RATE_LIMIT_MAX_REQUESTS: ${RATE_LIMIT_MAX_REQUESTS:-100}
+      USE_AWS_SECRETS_MANAGER: 'false'
+    depends_on:
+      postgres:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    volumes: ['./api:/app', '/app/node_modules']
+    healthcheck:
+      test: ['CMD-SHELL', 'curl -f http://localhost:3000/health || exit 1']
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
+  frontend:
+    build:
+      context: ./demo
+      dockerfile: Dockerfile.dev
+    ports: ['5173:5173']
+    environment:
+      VITE_API_URL: http://localhost:3000
+    depends_on: [api]
+    volumes: ['./demo:/app', '/app/node_modules']
+
+  indexer:
+    build:
+      context: ./services/indexer
+      dockerfile: Dockerfile.dev
+    environment:
+      NODE_ENV: development
+      DATABASE_URL: postgresql://paystream:paystream_dev@postgres:5432/paystream
+      REDIS_URL: redis://redis:6379
+      STELLAR_NETWORK: ${STELLAR_NETWORK:-testnet}
+      TESTNET_RPC_URL: ${TESTNET_RPC_URL:-https://soroban-testnet.stellar.org}
+      TESTNET_STREAM_CONTRACT_ID: ${TESTNET_STREAM_CONTRACT_ID:-}
+    depends_on:
+      postgres:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    volumes: ['./services/indexer:/app', '/app/node_modules']
+
+  notification:
+    build:
+      context: ./services/notification
+      dockerfile: Dockerfile.dev
+    environment:
+      NODE_ENV: development
+      REDIS_URL: redis://redis:6379
+    depends_on:
+      redis:
+        condition: service_healthy
+    volumes: ['./services/notification:/app', '/app/node_modules']
+
+volumes:
+  postgres_data:
+  redis_data:
+
+networks:
+  default:
+    name: paystream_dev

services/indexer/Dockerfile.dev

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+FROM node:20-alpine
+WORKDIR /app
+COPY package*.json ./
+RUN npm install
+COPY . .
+CMD ["node", "src/index.js"]

services/notification/Dockerfile.dev

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+FROM node:20-alpine
+WORKDIR /app
+COPY package*.json ./
+RUN npm install
+COPY . .
+CMD ["node", "src/index.js"]