Initial commit: MOPC platform with Docker deployment setup

Full Next.js 15 platform with tRPC, Prisma, PostgreSQL, NextAuth.
Includes production Dockerfile (multi-stage, port 7600), docker-compose
with registry-based image pull, Gitea Actions CI workflow, nginx config
for portal.monaco-opc.com, deployment scripts, and DEPLOYMENT.md guide.

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

docker/docker-compose.yml

@@ -0,0 +1,75 @@
+# =============================================================================
+# MOPC Platform - Production Docker Compose
+# =============================================================================
+# This stack contains only the Next.js app and PostgreSQL.
+# MinIO and Poste.io are external services connected via environment variables.
+#
+# The app image is built by Gitea CI and pushed to the container registry.
+# To pull the latest image: docker compose pull app
+# To deploy: docker compose up -d
+
+services:
+  app:
+    image: ${REGISTRY_URL}/mopc-app:latest
+    container_name: mopc-app
+    restart: unless-stopped
+    ports:
+      - "127.0.0.1:7600:7600"
+    env_file:
+      - .env
+    environment:
+      - NODE_ENV=production
+      - DATABASE_URL=postgresql://mopc:${DB_PASSWORD}@postgres:5432/mopc
+      - NEXTAUTH_URL=${NEXTAUTH_URL}
+      - NEXTAUTH_SECRET=${NEXTAUTH_SECRET}
+      - AUTH_SECRET=${NEXTAUTH_SECRET}
+      - MINIO_ENDPOINT=${MINIO_ENDPOINT}
+      - MINIO_PUBLIC_ENDPOINT=${MINIO_PUBLIC_ENDPOINT:-}
+      - MINIO_ACCESS_KEY=${MINIO_ACCESS_KEY}
+      - MINIO_SECRET_KEY=${MINIO_SECRET_KEY}
+      - MINIO_BUCKET=${MINIO_BUCKET}
+      - SMTP_HOST=${SMTP_HOST}
+      - SMTP_PORT=${SMTP_PORT}
+      - SMTP_USER=${SMTP_USER}
+      - SMTP_PASS=${SMTP_PASS}
+      - EMAIL_FROM=${EMAIL_FROM}
+      - OPENAI_API_KEY=${OPENAI_API_KEY:-}
+      - OPENAI_MODEL=${OPENAI_MODEL:-gpt-4o}
+      - MAX_FILE_SIZE=${MAX_FILE_SIZE:-524288000}
+    depends_on:
+      postgres:
+        condition: service_healthy
+    networks:
+      - mopc-network
+    healthcheck:
+      test: ["CMD", "wget", "-q", "--spider", "http://localhost:7600/api/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+
+  postgres:
+    image: postgres:16-alpine
+    container_name: mopc-postgres
+    restart: unless-stopped
+    environment:
+      - POSTGRES_USER=mopc
+      - POSTGRES_PASSWORD=${DB_PASSWORD}
+      - POSTGRES_DB=mopc
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U mopc"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    networks:
+      - mopc-network
+
+volumes:
+  postgres_data:
+    driver: local
+
+networks:
+  mopc-network:
+    driver: bridge