ENG-12957: Add section for S3 File Browser configuration (#7)

* Add section for S3 File Browser configuration

* Move s3 documentation to /docs directory

* Fix reference to values-file.md

* Fix order of itens in Advanced section

* Update docs/s3-browser.md

Co-authored-by: Wilson de Carvalho <796900+wcmjunior@users.noreply.github.com>

---------

Co-authored-by: Wilson de Carvalho <796900+wcmjunior@users.noreply.github.com>

README.md

@@ -204,6 +204,7 @@ Learn more in the [sidecar upgrade procedures](https://cyral.com/docs/sidecars/m
 
 Instructions for advanced configurations are available for the following topics:
 
+* [Enable the S3 File Browser](./docs/s3-browser.md)
 * [Expose to the Internet](./docs/public-load-balancer.md)
 * [Node scheduling](./docs/node-scheduling.md)
 * [Restrict repositories' ports](./docs/port-configuration.md)

docs/s3-browser.md

@@ -0,0 +1,21 @@
+#### Enable the S3 File Browser
+
+To configure the sidecar to work on the S3 File Browser, set the following extra parameters under the service key of your values file:
+
+```
+service:
+  dnsName: "<CNAME>" # ex: "sidecar.custom-domain.com"
+  loadBalancer:
+    tlsPorts: [443]
+    certificateId: "arn:aws:acm:<REGION>:<AWS_ACCOUNT>:certificate/<CERTIFICATE_ID>"
+```
+
+The CNAME provided in `service.dnsName` must be created
+after the deployment pointing to the sidecar load balancer.
+See [Add a CNAME or A record for the sidecar](https://cyral.com/docs/sidecars/manage/alias).
+
+All the Helm parameters used above are documented in the 
+[values file configuration reference](./values-file.md). 
+For more details about the S3 File Browser configuration, check the 
+[Enable the S3 File Browser](https://cyral.com/docs/how-to/enable-s3-browser) 
+documentation.