init user system with keycloak

.env.example

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+# Server Configuration
+PORT=3000
+NODE_ENV=development
+
+# Keycloak OpenID Connect Configuration
+# The base URL of your Keycloak server (e.g., https://keycloak.example.com)
+KEYCLOAK_AUTH_SERVER_URL=https://your-keycloak-instance.com/auth
+
+# The Keycloak realm name
+KEYCLOAK_REALM=your-realm-name
+
+# The client ID registered in Keycloak for this application
+KEYCLOAK_CLIENT_ID=friendolls-api
+
+# The client secret (required if the client is confidential)
+# Leave empty if using a public client
+KEYCLOAK_CLIENT_SECRET=
+
+# JWT Configuration
+# The expected issuer of the JWT token (usually {KEYCLOAK_AUTH_SERVER_URL}/realms/{KEYCLOAK_REALM})
+JWT_ISSUER=https://your-keycloak-instance.com/auth/realms/your-realm-name
+
+# The expected audience in the JWT token (usually the client ID)
+JWT_AUDIENCE=friendolls-api
+
+# JWKS URI for fetching public keys to verify JWT signatures
+# Format: {KEYCLOAK_AUTH_SERVER_URL}/realms/{KEYCLOAK_REALM}/protocol/openid-connect/certs
+JWKS_URI=https://your-keycloak-instance.com/auth/realms/your-realm-name/protocol/openid-connect/certs