feat: add DSN/URL connection string support for PostgreSQL and Redis (#11729)

deploy/compose/.env.example

@@ -53,8 +53,14 @@ [email protected]
 POSTGRES_DB=zitadel
 POSTGRES_ADMIN_USER=postgres
 POSTGRES_ADMIN_PASSWORD=postgres
-POSTGRES_ZITADEL_USER=zitadel
-POSTGRES_ZITADEL_PASSWORD=zitadel
+# DSN used by ZITADEL to connect to PostgreSQL.
+# The start-from-init command uses this DSN to create the database schema and for
+# normal operation. When a DSN is configured, ZITADEL does not create or switch
+# to a separate unprivileged database user; the user in this DSN is used directly
+# and must already exist. For production, configure this DSN to use a non-superuser
+# role with only the permissions ZITADEL needs.
+# See https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNSTRING
+ZITADEL_DATABASE_POSTGRES_DSN=postgresql://postgres:postgres@postgres:5432/zitadel?sslmode=disable
 
 # -----------------------------
 # Access logs
@@ -67,9 +73,9 @@ ZITADEL_ACCESS_LOG_STDOUT_ENABLED=true
 # Enable with --profile cache and switch connectors to redis.
 # -----------------------------
 ZITADEL_CACHES_CONNECTORS_REDIS_ENABLED=false
-ZITADEL_CACHES_CONNECTORS_REDIS_ADDR=redis:6379
-ZITADEL_CACHES_CONNECTORS_REDIS_USERNAME=
-ZITADEL_CACHES_CONNECTORS_REDIS_PASSWORD=
+# DSN used by ZITADEL to connect to Redis.
+# See https://redis.io/docs/latest/develop/tools/cli/#host-port-password-and-database
+ZITADEL_CACHES_CONNECTORS_REDIS_URL=redis://redis:6379/0
 ZITADEL_CACHES_INSTANCE_CONNECTOR=
 ZITADEL_CACHES_MILESTONES_CONNECTOR=
 ZITADEL_CACHES_ORGANIZATION_CONNECTOR=