update ES env variable documentation (#410)

fixes incorrect or missing documentation for ES_USE_SSL,
ES_VERIFY_CERTS, and ES_API_KEY


**Description:**
- README.md documentation has incorrect default values for ES_USE_SSL
and ES_VERIFY_CERTS
- The default values that are used can be found at:
`./stac_fastapi/elasticsearch/stac_fastapi/elasticsearch/config.py` and
`./stac_fastapi/opensearch/stac_fastapi/opensearch/config.py`
- Adds documentation for ES_API_KEY

**PR Checklist:**

- [X] Code is formatted and linted (run `pre-commit run --all-files`)
- [X] Tests pass (run `make test`)
- [X] Documentation has been updated to reflect changes, if applicable
- [X] Changes are added to the changelog

---------

Co-authored-by: Bennett Patrick Brixen <bpbrixe@sandia.gov>
Co-authored-by: Jonathan Healy <jonathan.d.healy@gmail.com>

Author: 3 people

CHANGELOG.md

@@ -15,6 +15,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Changed
 
 - Updated collection to index logic to support searching a large amount of indices [#412](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/412)
+- Updated documentation to reflect use of ES environment variables [#410](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/410)
+- Updated documentation to reflect `APP_PORT` in [stac-fastapi-core ApiSettings](https://github.com/stac-utils/stac-fastapi/blob/fa42985255fad0bab7dbe3aadbf1f74cb1635f3a/stac_fastapi/types/stac_fastapi/types/config.py#L30) [#410](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/410)
 
 ## [v6.0.0] - 2025-06-22
 

README.md

@@ -205,15 +205,16 @@ You can customize additional settings in your `.env` file:
 |------------------------------|--------------------------------------------------------------------------------------|--------------------------|---------------------------------------------------------------------------------------------|
 | `ES_HOST`                    | Hostname for external Elasticsearch/OpenSearch.                                      | `localhost`              | Optional                                                                                    |
 | `ES_PORT`                    | Port for Elasticsearch/OpenSearch.                                                   | `9200` (ES) / `9202` (OS)| Optional                                                                                    |
-| `ES_USE_SSL`                 | Use SSL for connecting to Elasticsearch/OpenSearch.                                  | `false`                  | Optional                                                                                    |
-| `ES_VERIFY_CERTS`            | Verify SSL certificates when connecting.                                             | `false`                  | Optional                                                                                    |
+| `ES_USE_SSL`                 | Use SSL for connecting to Elasticsearch/OpenSearch.                                  | `true`                   | Optional                                                                                    |
+| `ES_VERIFY_CERTS`            | Verify SSL certificates when connecting.                                             | `true`                   | Optional                                                                                    |
+| `ES_API_KEY`                 | API Key for external Elasticsearch/OpenSearch.                                       | N/A                      | Optional                                                                                    |
 | `ES_TIMEOUT`                 | Client timeout for Elasticsearch/OpenSearch.                                         | DB client default        | Optional                                                                                    |
 | `STAC_FASTAPI_TITLE`         | Title of the API in the documentation.                                               | `stac-fastapi-<backend>` | Optional                                                                                    |
 | `STAC_FASTAPI_DESCRIPTION`   | Description of the API in the documentation.                                         | N/A                      | Optional                                                                                    |
 | `STAC_FASTAPI_VERSION`       | API version.                                                                         | `2.1`                    | Optional                                                                                    |
 | `STAC_FASTAPI_LANDING_PAGE_ID` | Landing page ID                                                                    | `stac-fastapi`           | Optional                                                                                    |
 | `APP_HOST`                   | Server bind address.                                                                 | `0.0.0.0`                | Optional                                                                                    |
-| `APP_PORT`                   | Server port.                                                                         | `8080`                   | Optional                                                                                    |
+| `APP_PORT`                   | Server port.                                                                         | `8000`                   | Optional                                                                                    |
 | `ENVIRONMENT`                | Runtime environment.                                                                 | `local`                  | Optional                                                                                    |
 | `WEB_CONCURRENCY`            | Number of worker processes.                                                          | `10`                     | Optional                                                                                    |
 | `RELOAD`                     | Enable auto-reload for development.                                                  | `true`                   | Optional                                                                                    |