Implement backend API and database services in Docker setup

- Added a new `api` service for the NestJS backend, including health checks and dependencies on PostgreSQL, Redis, and MinIO.
- Introduced PostgreSQL and Redis services with health checks and configurations for data persistence.
- Added MinIO for S3-compatible object storage and a one-shot service to initialize required buckets.
- Updated the Nginx configuration to proxy requests to the new backend API and MinIO storage.
- Enhanced the Dockerfile to support the new API environment variables and configurations.
- Updated the `package.json` and `package-lock.json` to include new dependencies for QR code generation and other utilities.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/.env.example

@@ -0,0 +1,96 @@
+ENVIRONMENT=local # local | development | production
+
+# App - Local
+PORT=4000
+DOMAIN=localhost:4000
+FRONTEND_URL=http://localhost:3000
+
+# DB - API
+DATABASE_HOST=localhost
+DATABASE_PORT=5432
+DATABASE_USER=postgres
+DATABASE_PASSWORD=local
+DATABASE_NAME=indeehub
+
+# DB - EVENTS/ANALYTICS (POSTHOG)
+DATABASE_POSTHOG_HOST=localhost
+DATABASE_POSTHOG_PORT=5434
+DATABASE_POSTHOG_USER=postgres
+DATABASE_POSTHOG_PASSWORD=local
+DATABASE_POSTHOG_NAME=staging
+
+# Trascoding Queue - Local
+QUEUE_HOST=localhost
+QUEUE_PORT=6379
+QUEUE_PASSWORD=
+
+# BTCPay Server - Bitcoin/Lightning Payments
+BTCPAY_URL=https://btcpay.yourdomain.com
+BTCPAY_STORE_ID=
+BTCPAY_API_KEY=
+BTCPAY_WEBHOOK_SECRET=
+
+# User Pool - AWS Cognito
+COGNITO_USER_POOL_ID=
+COGNITO_CLIENT_ID=
+
+# Sendgrid - Email Service
+SENDGRID_API_KEY=
+SENDGRID_SENDER=
+SENDGRID_WAITLIST=
+
+# AWS KEYS
+AWS_ACCESS_KEY=
+AWS_SECRET_KEY=
+AWS_REGION=
+
+# AWS S3
+S3_PUBLIC_BUCKET_URL=
+S3_PUBLIC_BUCKET_NAME=
+
+# AWS CloudFront
+CLOUDFRONT_PRIVATE_KEY=
+CLOUDFRONT_KEY_PAIR_ID=
+
+# Note: Stripe has been removed. All payments are now via BTCPay Server (Lightning).
+
+# PAY WITH FLASH - ENTHUSIAST SUBSCRIPTION
+FLASH_JWT_SECRET_ENTHUSIAST=
+
+# PAY WITH FLASH - FILM BUFF SUBSCRIPTION
+FLASH_JWT_SECRET_FILM_BUFF=
+
+# PAY WITH FLASH - CINEPHILE SUBSCRIPTION
+FLASH_JWT_SECRET_CINEPHILE=
+
+# PAY WITH FLASH - RSS ADDON SUBSCRIPTION
+FLASH_JWT_SECRET_RSS_ADDON=
+
+# PAY WITH FLASH - VERIFICATION ADDON SUBSCRIPTION
+FLASH_JWT_SECRET_VERIFICATION_ADDON=
+
+# Transcoding API
+TRANSCODING_API_KEY=
+TRANSCODING_API_URL=http://localhost:4001
+
+# Podping - RSS Update Notifications
+PODPING_URL=https://podping.cloud/
+PODPING_KEY=
+PODPING_USER_AGENT=
+
+# Retool API KEY - Admin Dashboard
+ADMIN_API_KEY=
+
+# PostHog - Analytics
+POSTHOG_API_KEY=
+
+# Sentry - Error Tracking
+SENTRY_ENVIRONMENT=
+
+# BUYDRM
+PRIVATE_AUTH_CERTIFICATE_KEY_ID =
+DRM_SECRET_NAME =
+
+# Project Review
+DASHBOARD_REVIEW_URL = https://oneseventech.retool.com/apps/5e86de84-7cdb-11ef-998f-47951c6124a1/Testing%20IndeeHub/film-details?id=
+PROJECT_REVIEW_RECIPIENT_EMAIL = <your email>