fix(dawarich): SECRET_KEY_BASE missing on sidekiq env

Production mode derives OTP/encryption keys from SECRET_KEY_BASE; app had
it, sidekiq did not -> 'OTP_ENCRYPTION_PRIMARY_KEY required in production'
crash loop. DB has 0 OTP users, so derived keys are safe.

dawarich/docker-compose.yml

@@ -128,6 +128,7 @@ services:
     restart: unless-stopped
     environment:
       RAILS_ENV: production
+      SECRET_KEY_BASE: 2f5e59518ddeaeb978c73bc265eea20a91d5fe203d2a45280bd8fbf62b447b57
       REDIS_URL: redis://dawarich_redis:6379
       DATABASE_HOST: dawarich_db
       DATABASE_USERNAME: postgres