Config Parameter Reference

This page lists all available configuration parameters in Katalogue.

Explanation of the columns in the table:

Column	Description
Parameter	The parameter name. Used as-is for environment variables and as setting_code in the DB table.
Path	Nesting path under config in appsettings.json. Empty means the parameter sits directly under config. Not used for env vars or the DB table.
Sources	Where the parameter can be set: file = appsettings.json, env = environment variable, db = database table (editable via the GUI Settings page).
Default	Default value when the parameter is not explicitly set.
Datatype	Expected type of the value.
Description	What the parameter does.

See Configuration Overview for examples of setting parameters via each source type, priority rules, and guidance on secrets.

Backend Service (api)

Parameter	Path	Sources	Default	Datatype	Description
API_ENDPOINT_BASE_URL		file · env		string	Hostname of the Katalogue Backend API. Used to set the “issuer” property of the authentication tokens issued by Katalogue.
API_ENDPOINT_PATH		file · env	/api	string	Path, relative to API_ENDPOINT_BASE_URL, where the api endpoints are hosted.
COOKIE_NAME_PREFIX		file · env	katalogue	string	Name prefix of all cookies issued by Katalogue.
CORS_ORIGIN		file · env		array/string	CORS Origin whitelist. An array with URLs (or single string) that are allowed to connect to the Katalogue backend API. Normally, this should only contain the URL to the Katalogue frontend app.
DATA_FILES_DIRECTORY		file · env	\<install_directory\>/data	string	Full path to folder on the server where datasource files from e.g. manually uploaded dbt manifests will be stored.
ENCRYPTION_KEY		file · env		string	Encryption key used by Katalogue to hash user passwords (local users only) and encrypt config secrets like repository password and connection passwords. This should be a long, random string. Keep it safe, it is not possible to decrypt secrets or authenticate local users if it is lost.
ENVIRONMENT		file · db	NULL	string	Environment label for this Katalogue instance (e.g. dev, test, staging). Shown in the navigation header when set to anything other than prod, to help visually distinguish between environments. Also included in some system email subjects.
FRONTEND_URL		file · db	NULL	string	Full URL to this Katalogue instance. Used to generate links in e.g. system emails. Example: https://katalogue.your-company.com
PORT		file · env	8080	string	Port that the Nodejs Express API (i.e. the Katalogue backend application) listens on.
TRUST_PROXY		file · env	FALSE	boolean/string	Controls whether Katalogue trusts forwarded headers from a reverse proxy. Set to TRUE to trust all proxies (not recommended in production — clients can spoof their IP). For production, set to the specific upstream proxy IP or CIDR range (e.g. 10.0.0.1 or 10.0.0.0/24). Set to FALSE (default) if Katalogue is not behind a reverse proxy. See Network Proxy Configuration.
API_REQUEST_ARRAY_MAX_SIZE	api	file · env	100000	integer	Maximum number of items allowed in a request array for standard endpoints. Requests exceeding this limit are rejected with a 400 error. Reduce this value if you want to limit server load from large batch operations.
API_REQUEST_SENSITIVE_ARRAY_MAX_SIZE	api	file · env	100	integer	Maximum number of items allowed in a request array for sensitive endpoints — i.e. endpoints where each item triggers expensive side-effects such as sending emails. Requests exceeding this limit are rejected with a 400 error.
ACCESS_TOKEN_EXPIRATION_TIME	authentication	file	60m	string	Time that an access token is valid
LOCAL_IS_ENABLED	authentication	file · env · db	TRUE	boolean	Flag to tell if Local authentication is enabled
OIDC_IS_ENABLED	authentication	file · env · db	FALSE	boolean	Flag to tell if Azure OpenID Connect authentication is enabled
REFRESH_TOKEN_EXPIRATION_TIME	authentication	file	30d	string	Time that a refresh token is valid
OIDC_APPLICATION_ID	authentication.oidc	file · env · db	NULL	string	Microsoft Azure Application (client) ID, i.e. ID of the Enterprise Application registered in Microsoft Entra ID
OIDC_AUTHORIZE_ENDPOINT	authentication.oidc	file · db	/oauth2/v2.0/authorize	string	Endpoint for OAuth2 authorization requests
OIDC_CLIENT_SECRET	authentication.oidc	file · env · db	NULL	string	Microsoft Azure Client Secret
OIDC_DIRECTORY_ID	authentication.oidc	file · env · db	NULL	string	Microsoft Azure Directory (tenant) ID
OIDC_ENDPOINT_BASE_URL	authentication.oidc	file · db	https://login.microsoftonline.com	string	Base URL of the OAuth2 endpoint
OIDC_JWKS_ENDPOINT	authentication.oidc	file · db	/discovery/v2.0/keys	string	Endpoint to retrieve public keys
OIDC_LOGOUT_ENDPOINT	authentication.oidc	file · db	/oauth2/v2.0/logout	string	Endpoint for OAuth2 logout requests
OIDC_REDIRECT_URI	authentication.oidc	file · env · db	NULL	string	URI that Microsoft Azure should redirect to after completed authentication
OIDC_SCOPE	authentication.oidc	file · env · db	profile user.read offline_access openid	string	Scope that the configured enterprise application need access to
OIDC_TOKEN_ENDPOINT	authentication.oidc	file · db	/oauth2/v2.0/token	string	Endpoint for OAuth2 token requests
OIDC_USER_SOURCE_ID	authentication.oidc	file · db	oid	string	Name of the user unique Id property in the OpenID Connect Id token
OIDC_USER_USERNAME	authentication.oidc	file · db	upn	string	Name of the user Username property in the OpenID Connect Id token
DATABRICKS_BASE_ENDPOINT	connectors.databricks	file · db	/api/2.1/unity-catalog	string	Unity Catalog API Base URL, excluding hostname
DATABRICKS_CATALOG_ENDPOINT	connectors.databricks	file · db	/catalog	string	Unity Catalog API catalog endpoint, relative to the base URL
DATABRICKS_SCHEMA_ENDPOINT	connectors.databricks	file · db	/schema	string	Unity Catalog API schema endpoint, relative to the base URL
DATABRICKS_TABLE_ENDPOINT	connectors.databricks	file · db	/table	string	Unity Catalog API table endpoint, relative to the base URL
DATABRICKS_IS_ENABLED	connectors.databricks	file · env	TRUE	boolean	Flag to enable or disable this connector. If a connector is disabled, it cannot be used in the GUI and all connector-specific nodejs dependencies/libraries are excluded on startup. This means that the dependency does not have to be installed if the connector is disabled.
DBT_DEFAULT_MANIFEST_FILENAME	connectors.dbt	file · db	manifest.json	string	Filename for the Dbt manifest json file that is used as the datasource for the Dbt connector. This property will only be used if no filename is specified in the connection URL
DBT_IS_ENABLED	connectors.dbt	file · env	TRUE	boolean	Flag to enable or disable this connector. If a connector is disabled, it cannot be used in the GUI and all connector-specific nodejs dependencies/libraries are excluded on startup. This means that the dependency does not have to be installed if the connector is disabled.
FILE_CONNECTOR_IS_ENABLED	connectors.file	file · env	TRUE	boolean	Flag to enable or disable this connector. If a connector is disabled, it cannot be used in the GUI and all connector-specific nodejs dependencies/libraries are excluded on startup. This means that the dependency does not have to be installed if the connector is disabled.
IBMDB2_CODEPAGE	connectors.ibmdb2	file · db	NULL	integer	IBM DB2 database codepage, i.e. database encoding. Specify this if data imported from IBM DB2 databases display incorrectly. Note that this setting affects all IBM DB2 connectors in Katalogue, specifying a codepage per datasource is currently not supported.
IBMDB2_IS_ENABLED	connectors.ibmdb2	file · env	TRUE	boolean	Flag to enable or disable this connector. If a connector is disabled, it cannot be used in the GUI and all connector-specific nodejs dependencies/libraries are excluded on startup. This means that the dependency does not have to be installed if the connector is disabled.
MSSQL_IS_ENABLED	connectors.mssql	file · env	TRUE	boolean	Flag to enable or disable this connector. If a connector is disabled, it cannot be used in the GUI and all connector-specific nodejs dependencies/libraries are excluded on startup. This means that the dependency does not have to be installed if the connector is disabled.
ODBC_IS_ENABLED	connectors.odbc	file · env	TRUE	boolean	Flag to enable or disable this connector. If a connector is disabled, it cannot be used in the GUI and all connector-specific nodejs dependencies/libraries are excluded on startup. This means that the dependency does not have to be installed if the connector is disabled.
ORACLE_IS_ENABLED	connectors.oracle	file · env	TRUE	boolean	Flag to enable or disable this connector. If a connector is disabled, it cannot be used in the GUI and all connector-specific nodejs dependencies/libraries are excluded on startup. This means that the dependency does not have to be installed if the connector is disabled.
ORACLE_INSTANT_CLIENT_PATH	connectors.oracle	file · env		string	Oracle Instant Client path, if not the default path. See the “oracledb” nodejs package docs for more info.
POSTGRES_ENABLED	connectors.postgres	file · env	TRUE	boolean	Flag to enable or disable this connector. If a connector is disabled, it cannot be used in the GUI and all connector-specific nodejs dependencies/libraries are excluded on startup. This means that the dependency does not have to be installed if the connector is disabled.
SNOWFLAKE_IS_ENABLED	connectors.snowflake	file · env	TRUE	boolean	Flag to enable or disable this connector. If a connector is disabled, it cannot be used in the GUI and all connector-specific nodejs dependencies/libraries are excluded on startup. This means that the dependency does not have to be installed if the connector is disabled.
COOKIE_HTTP_ONLY	cookieHeaders	file · env	TRUE	boolean	Value of the cookie HTTPOnly attribute. Set to true in production.
COOKIE_PATH	cookieHeaders	file · env	/api	string	Value of the cookie Path attribute. Set to the base api endpoint path of the Katalogue backend API.
COOKIE_SAME_SITE	cookieHeaders	file · env	TRUE	boolean/string	Value of the cookie SameSite attribute. Set to “None” in production.
COOKIE_SECURE	cookieHeaders	file · env	FALSE	boolean	Value of the cookie Secure attribute. Set to false in production.
HTTP_LOGGING_IS_ENABLED	logging	file · env · db	FALSE	boolean	Flag to tell if all HTTP requests and their execution time to the backend API should be logged or not. WARNING! Enabling this will reduce performance and quickly fill the http_request log table.
LOG_LEVEL	logging	file · env · db	info	string	Determines the granularity of logging for the backend API service. Available levels are “critical”, “error”, “warning”, “info” and “debug”. The latter two can be set through the GUI, the others must be set in the repository database.
AUDIT_FILENAME	logging	file · env	logs/audit.json	string	Audit filename path. See the “winston” nodejs package docs for more info.
LOG_DIRNAME	logging	file · env	logs	string	Log file directory path. See the “winston” nodejs package docs for more info.
LOG_FILENAME	logging	file · env	application_%DATE%.log	string	Filename pattern for log files. See the “winston” nodejs package docs for more info.
LOG_FILENAME_DATEPATTERN	logging	file · env	YYYY-MM-DD	string	Date format for the date part of the logfile name
LOG_MAXFILES	logging	file · env	14d	string	Determines how many days old logfiles should be retained before getting deleted by the log rotation functionality.
LOG_TO_CONSOLE_IN_PROD	logging	file · env	TRUE	boolean	Flag to tell if logging should be done to console or not. Note that logging to file is always enabled and not affected by this setting. Set this to true when using managed servers, Docker etc with external monitoring tools to let them pick up the logs.
LOG_USE_UTC	logging	file · env	FALSE	boolean	Flag to tell if the log file dates should be in UTC format or the server´s timezone.
MAIL_FROM	mail	file · env · db	NULL	string	Email address that all emails will be sent from. If Email Server Type is Azure, this must be the email address of a real user account with a license that provides the account with a mailbox
MAIL_HOST	mail	file · env · db	NULL	string	Hostname of the SMTP mail server
MAIL_IS_ENABLED	mail	file · env · db	FALSE	boolean	Flag to tell if the application should send emails or not
MAIL_IS_SECURE	mail	file · env · db	FALSE	boolean	Flag to tell if a secure connection should be used to the SMTP mail server or not. If true the connection will use TLS when connecting to server. If false (the default) then TLS is used if server supports the STARTTLS extension.
MAIL_PASSWORD	mail	file · env · db	NULL	string	Password to authenticate against the SMTP mail server
MAIL_PORT	mail	file · env · db	NULL	string	Port of the SMTP mail server
MAIL_SEND_WELCOME_EMAILS	mail	file · db	TRUE	boolean	Send a welcome email with login instructions to new users when they are added to Katalogue for the first time
MAIL_SERVER_TYPE	mail	file · env · db	msgraph	string	Use Azure Microsoft Graph API or custom SMTP configuration for sending emails. Allowed values are “smtp” or “msgraph”.
MAIL_SYSTEM_EMAILS_TO	mail	file · db	NULL	string	List of email addresses, separated by a comma, that will receive system emails such as task failure notifications. These emails are typically sent to Katalogue administrators or other IT admins.
MAIL_USERNAME	mail	file · env · db	NULL	string	Username to authenticate against the SMTP mail server
ORGANIZATION_NAME	organization	file · db	NULL	string	Name of the organization this Katalogue instance is installed in. Used in system emails and the about menu to personalize the content. Configurable via Settings → General → Customization.
ORGANIZATION_RESOURCE_NAME	organization	file · db	NULL	string	Display name for an organization-internal learning resource or portal. Shown in email footers and the about menu. If omitted, the URL is used as the label. Configurable via Settings → General → Customization.
ORGANIZATION_RESOURCE_URL	organization	file · db	NULL	string	URL for an organization-internal learning resource or portal. When set, a link is shown in email footers and the about menu. If omitted, no link is shown. https:// is automatically prepended if no protocol is provided. Configurable via Settings → General → Customization.
ORGANIZATION_SUPPORT_NAME	organization	file · db	NULL	string	Display name for the organization’s support contact. Shown in email footers and the about menu. Configurable via Settings → General → Customization.
ORGANIZATION_SUPPORT_URL	organization	file · db	NULL	string	Contact URL or email address for the organization’s support team. Accepts a full URL (e.g. a Teams channel or web form) or a plain email address. Shown in email footers and the about menu. Configurable via Settings → General → Customization.
AZURE_KEY_VAULT_IS_ENABLED	passwordManagers.azureKeyVault	file · db	FALSE	boolean	Flag to tell if Microsoft Azure Key Vault is enabled
AZURE_KEY_VAULT_NAME	passwordManagers.azureKeyVault	file · db	NULL	string	Microsoft Azure Key vault name. Can be extracted from the Vault URI like so: “https://<KEY-VAULT-NAME>.vault.azure.net”
HTTPS_PROXY	proxy	file · env		string	URL of the corporate egress proxy for outbound HTTPS connections (e.g. http://proxy.corp.com:8080). Covers MS Graph API, Azure token/JWKS endpoints, Azure Key Vault, and remote file fetches. See Network Proxy Configuration.
HTTP_PROXY	proxy	file · env		string	URL of the corporate egress proxy for outbound HTTP connections. See Network Proxy Configuration.
NO_PROXY	proxy	file · env		string	Comma-separated list of hostnames or IP ranges that should bypass the egress proxy. The app’s own hostname (from API_ENDPOINT_BASE_URL) is always added automatically at startup. See Network Proxy Configuration.
RATE_LIMIT_ENABLED	rateLimiting	file · env	TRUE	boolean	Enable or disable request rate limiting. When disabled, no limits are enforced on any endpoint.
RATE_LIMIT_HEADERS_ENABLED	rateLimiting	file · env	TRUE	boolean	When true, X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset headers are included on every response. Set to false to hide rate-limit ceilings from clients. The Retry-After header on HTTP 429 responses is always included regardless of this setting.
RATE_LIMIT_READ_POINTS	rateLimiting	file · env	300	integer	Tier 1 (IP floor) — maximum GET requests per IP per window for GUI/unauthenticated requests. Set generously; this is a DoS flood barrier, not per-user enforcement. The SPA fires 20–30 parallel GETs on page load so the effective per-user demand is high.
RATE_LIMIT_READ_DURATION_IN_SECONDS	rateLimiting	file · env	10	integer	Window in seconds for the Tier 1 GUI read limiter. Points are replenished after this many seconds.
RATE_LIMIT_READ_API_POINTS	rateLimiting	file · env	600	integer	Tier 1 (IP floor) — maximum GET requests per IP per window for REST API (Bearer token) requests. Higher than RATE_LIMIT_READ_POINTS because integrations issue more requests than GUI users.
RATE_LIMIT_READ_API_DURATION_IN_SECONDS	rateLimiting	file · env	10	integer	Window in seconds for the Tier 1 REST API read limiter. Points are replenished after this many seconds.
RATE_LIMIT_WRITE_POINTS	rateLimiting	file · env	100	integer	Tier 1 (IP floor) — maximum write requests (POST/PUT/DELETE) per IP per window.
RATE_LIMIT_WRITE_DURATION_IN_SECONDS	rateLimiting	file · env	10	integer	Window in seconds for the Tier 1 write limiter. Points are replenished after this many seconds.
RATE_LIMIT_LOGIN_POINTS	rateLimiting	file · env	5	integer	Maximum login attempts per IP per window. Protects against brute-force attacks. Uses exponential backoff on repeated violations (see architecture documentation).
RATE_LIMIT_LOGIN_DURATION_IN_SECONDS	rateLimiting	file · env	60	integer	Window in seconds for the login rate limiter. Also the initial block duration for the first exponential backoff violation.
RATE_LIMIT_PER_USER_READ_POINTS	rateLimiting	file · env	100	integer	Tier 2 (per-user) — maximum GET requests per authenticated GUI user per window. Applied after authentication; keyed on user identity, not IP.
RATE_LIMIT_PER_USER_READ_DURATION_IN_SECONDS	rateLimiting	file · env	10	integer	Window in seconds for the Tier 2 GUI read limiter.
RATE_LIMIT_PER_USER_READ_API_POINTS	rateLimiting	file · env	200	integer	Tier 2 (per-client) — maximum GET requests per authenticated REST API client per window. Applied after authentication; keyed on client_id.
RATE_LIMIT_PER_USER_READ_API_DURATION_IN_SECONDS	rateLimiting	file · env	10	integer	Window in seconds for the Tier 2 REST API read limiter.
RATE_LIMIT_PER_USER_WRITE_POINTS	rateLimiting	file · env	30	integer	Tier 2 (per-user) — maximum write requests (POST/PUT/DELETE) per authenticated user or client per window. Applied after authentication.
RATE_LIMIT_PER_USER_WRITE_DURATION_IN_SECONDS	rateLimiting	file · env	10	integer	Window in seconds for the Tier 2 write limiter.
REPOSITORY_BATCH_INSERT_CHUNK_SIZE	repository	file · env	1000	integer	Number of rows that is inserted in each batch when doing batch inserts. Batch inserts are performed by some endpoints. Change this only if there are performance issues related to batch inserts.
REPOSITORY_BATCH_UPDATE_CHUNK_SIZE	repository	file · env	10000	integer	Number of rows that is updated in each batch when doing batch updates. Batch updates are performed by some endpoints. Change this only if there are performance issues related to batch inserts.
REPOSITORY_DATABASE	repository	file · env	katalogue	string	Database of the Katalogue PostgreSQL repository database
REPOSITORY_HOSTNAME	repository	file · env	localhost	string	Hostname of the Katalogue PostgreSQL repository database
REPOSITORY_PASSWORD	repository	file · env		string	Password of the Katalogue repository database service account.
REPOSITORY_PORT	repository	file · env	5432	string	Port of the Katalogue PostgreSQL repository database
REPOSITORY_USE_SSL	repository	file · env	FALSE	boolean	Flag to enable SSL for the Katalogue PostgreSQL repository database connection.
REPOSITORY_USERNAME	repository	file · env	katalogue_superuser	string	Username of the Katalogue repository database service account.
REPOSITORY_POOL_MAX	repository.repositoryPool	file · env	300	integer	Maximum number of connections in the connection pool for the Katalogue PostgreSQL repository database connection.
REPOSITORY_POOL_MIN	repository.repositoryPool	file · env	2	integer	Minimum number of connections in the connection pool for the Katalogue PostgreSQL repository database connection.
REST_API_IS_ENABLED	restApi	file · env · db	FALSE	boolean	Flag to enable the REST API service
REST_API_OIDC_PATH	restApi	file · env · db	/oidc	string	Path, relative to API_ENDPOINT_BASE_URL, where the REST API authentication endpoints /token, /jwks etc should be hosted.
REST_API_DOCS_PATH	restApi	file · env · db	/docs	string	Path, relative to API_ENDPOINT_BASE_URL, where the REST API documentation (Redoc / OpenAPI Specification) should be hosted.
REST_API_ACCESS_TOKEN_TTL_IN_MINUTES	restApi	file · env · db	5	integer	Duration in minutes that an access token is valid. This resolves to the “exp” attribute of the access token.
REST_API_OIDC_SIGNING_KEY	restApi	file · env · db	NULL	string	Private key used to sign access tokens for the REST API authentication endpoint. This is automatically generated if no external key (through environment variable or config file) is provided. The easiest way to generate externally provided keys is with the services/api/utils/initialize.js utility tool. The value of this parameter must be a key that is a stringified JSON object.
REST_API_CLIENT_SECRET_TTL_IN_DAYS	restApi	file · env · db	365	integer	Duration in days that a client secret is valid. Expired client secrets cannot be used to retrieve access tokens from the token endpoint. Set this to null to never expire client secrets.
SCHEDULER_IS_ENABLED	scheduler	file · env	TRUE	boolean	Enable or disable the scheduler loop. When disabled, Schedules are not evaluated and no Tasks are enqueued automatically.
WORKER_IS_ENABLED	scheduler	file · env	TRUE	boolean	Enable or disable the worker loop. When disabled, the job queue is not drained and no Tasks are executed automatically.
SCHEDULER_POLL_INTERVAL_SECONDS	scheduler	file · env	60	integer	How often (in seconds) the scheduler checks for Schedules whose cron expression is due.
WORKER_POLL_INTERVAL_SECONDS	scheduler	file · env	3	integer	How often (in seconds) the worker polls the job queue for the next Task to execute.
SCHEDULER_AUTO_DISABLE_TASK_FAILURE_COUNT	scheduler	file · env	5	integer	Number of consecutive scheduled failures after which a Task is automatically disabled. Set to 0 or a negative value to disable this feature (allow unlimited consecutive failures).
SYNC_NESTED_USER_GROUPS	userProvisioning	file · db	TRUE	boolean	Flag to tell if the Microsoft Entra ID user group sync includes users in nested user groups or only direct members
GROUP_DESCRIPTION	userProvisioning.groupAttributeMapping	file · db	description	string	Name of the user group Description property in the user provisioning system
GROUP_EMAIL	userProvisioning.groupAttributeMapping	file · db	mail	string	Name of the user group Email name property in the user provisioning system
GROUP_NAME	userProvisioning.groupAttributeMapping	file · db	displayName	string	Name of the user group Name property in the user provisioning system
GROUP_SOURCE_ID	userProvisioning.groupAttributeMapping	file · db	id	string	Name of the user group unique Id property in the user provisioning system
MSGRAPH_ENDPOINT_BASE_URL	userProvisioning.msgraph	file · db	https://graph.microsoft.com/v1.0	string	Base URL of the Microsoft Graph API
MSGRAPH_GROUP_BASE_FILTER	userProvisioning.msgraph	file · db	NULL	string	Filter expression used in the Microsoft Graph GET request to get user groups
MSGRAPH_SCOPE	userProvisioning.msgraph	file · db	https://graph.microsoft.com/.default	string	Scope that the configured enterprise application need access to
MSGRAPH_USER_BASE_FILTER	userProvisioning.msgraph	file · db	userType eq ''Member'' and surName ge '' '' and accountEnabled eq true	string	Filter expression used in the Microsoft Graph GET request to get users
USER_DEPARTMENT	userProvisioning.userAttributeMapping	file · db	department	string	Name of the user Department property in the user provisioning system
USER_EMAIL	userProvisioning.userAttributeMapping	file · db	mail	string	Name of the user Email property in the user provisioning system
USER_FULLNAME	userProvisioning.userAttributeMapping	file · db	displayName	string	Name of the user Full name property in the user provisioning system
USER_SOURCE_ID	userProvisioning.userAttributeMapping	file · db	id	string	Name of the user unique Id property in the user provisioning system
USER_TITLE	userProvisioning.userAttributeMapping	file · db	jobTitle	string	Name of the user Title property in the user provisioning system
USER_USERNAME	userProvisioning.userAttributeMapping	file · db	userPrincipalName	string	Name of the user Username property in the user provisioning system

Frontend Service (spa)

Parameter	Path	Sources	Default	Datatype	Description
PORT		env	8080	integer	nginx listen port inside the container.
API_URL	api	file · env	http://localhost:8888/api	string	URL to the Katalogue Backend API. Used to connect the frontend service to the backend.