use env vars for s3 creds

Author: nicktrn

hosting/docker/docker-compose.yml

@@ -42,8 +42,8 @@ services:
       TRIGGER_BOOTSTRAP_WORKER_TOKEN_PATH: /home/node/shared/worker_token
       DEPLOY_REGISTRY_HOST: localhost:5000
       OBJECT_STORE_BASE_URL: http://minio:9000
-      OBJECT_STORE_ACCESS_KEY_ID: BlJ2Hcd6Cgsz3ITBWy4p
-      OBJECT_STORE_SECRET_ACCESS_KEY: RskeTL9VAQ7saSSI2hK1MUMaaAIavf7vyQyVPiDu
+      OBJECT_STORE_ACCESS_KEY_ID: ${OBJECT_STORE_ACCESS_KEY_ID}
+      OBJECT_STORE_SECRET_ACCESS_KEY: ${OBJECT_STORE_SECRET_ACCESS_KEY}
       GRACEFUL_SHUTDOWN_TIMEOUT: 1000
       # Limits
       # TASK_PAYLOAD_OFFLOAD_THRESHOLD: 524288 # 512KB