Update README.md and .env.sample for Versity S3 Gateway configuration. Change path in README to reflect new directory structure and clarify environment variable usage for credentials. Modify .env.sample to include additional credential options and improve documentation for setting up the environment. Adjust compose.yaml to utilize pass-through environment variables, enhancing security and usability for deployment.

komodo/s3/versitygw/compose.yaml

@@ -6,8 +6,12 @@ services:
     container_name: versitygw
     restart: unless-stopped
     environment:
-      - ROOT_ACCESS_KEY=${ROOT_ACCESS_KEY}
-      - ROOT_SECRET_KEY=${ROOT_SECRET_KEY}
+      # Pass-through (no `${VAR}`): avoids empty interpolation when secrets are
+      # only in the deploy environment (e.g. Komodo) or not in `.env`.
+      - ROOT_ACCESS_KEY
+      - ROOT_SECRET_KEY
+      - ROOT_ACCESS_KEY_ID
+      - ROOT_SECRET_ACCESS_KEY
       # Matches Helm chart default; enables `/_/health` for probes.
       - VGW_HEALTH=/_/health
     ports: