FHIR Transformer Configuration
The fhir-transformer service reads .fhir-transformer.env when it converts hospital data to FHIR resources.
Environment variables
Section titled “Environment variables”The checked-in environment file defines each variable below. Rows marked optional are not needed in every installation. Replace repository examples before deployment, and keep API keys out of source control.
| Variable | Default Value | Explanation |
|---|---|---|
FHIR_SERVER_URL |
http://hapi-fhir-jpaserver-start:8080/fhir |
The direct internal URL to the HAPI FHIR server. This is used by the transformer to post the transformed resources directly to the FHIR server. |
FHIR_SERVER_APIKEY |
<FHIR_SERVER_API_KEY> |
Optional secret. Only used when the selected transformer release authenticates to its FHIR endpoint. |
FILE_UPLOADER_SERVER_URL |
http://file-uploader:3000/api |
Optional/disabled dependency. The referenced service is commented out in the current Compose file. |
HOSPITAL_BLOCK_CHAIN_ADDRESS |
DatasourceBlockchainAddressWalletAddress |
The wallet or blockchain address assigned to this specific hospital node for HealthTAG blockchain transactions. |

