Adding default .env.

Author: hackintoshrao

getting-started/minio/.env

@@ -0,0 +1,42 @@
+# .env
+# Default environment variables for Polaris Minio S3 example
+
+# Minio Root Credentials (used by minio service and mc script)
+MINIO_ROOT_USER=minioadmin
+MINIO_ROOT_PASSWORD=minioadmin
+
+# Minio S3 User Credentials (created by mc script, used by services)
+POLARIS_S3_USER=polaris_s3_user
+POLARIS_S3_PASSWORD=polaris_s3_password_val
+
+SPARK_MINIO_S3_USER=spark_minio_s3_user
+SPARK_MINIO_S3_PASSWORD=spark_minio_s3_password_val
+
+TRINO_MINIO_S3_USER=trino_minio_s3_user
+TRINO_MINIO_S3_PASSWORD=trino_minio_s3_password_val
+
+# Polaris Client Credentials (created by polaris-bootstrap-minio, used by Spark/Trino to authenticate to Polaris)
+# These are used by polaris-bootstrap-minio and polaris-setup-governance directly
+SPARK_POLARIS_CLIENT_ID=spark_app_client
+SPARK_POLARIS_CLIENT_SECRET=spark_client_secret_val
+
+TRINO_POLARIS_CLIENT_ID=trino_app_client
+TRINO_POLARIS_CLIENT_SECRET=trino_client_secret_val
+
+# These specific _ENV suffixed versions are referenced by the spark-sql-minio service environment block
+# Setting them explicitly here to match the defaults and avoid Docker Compose warnings.
+SPARK_POLARIS_CLIENT_ID_ENV=spark_app_client
+SPARK_POLARIS_CLIENT_SECRET_ENV=spark_client_secret_val
+
+# Port Mappings (defaults used in docker-compose.yml)
+MINIO_API_PORT=9000
+MINIO_CONSOLE_PORT=9001
+POSTGRES_MINIO_PORT=5433
+POLARIS_MINIO_API_PORT=8183
+POLARIS_MINIO_MGMT_PORT=8184
+SPARK_UI_MINIO_START_PORT=4050
+SPARK_UI_MINIO_END_PORT=4055 # Used in port range mapping
+TRINO_MINIO_PORT=8083
+
+# You can change these values if needed, but these align with the defaults
+# in the docker-compose.yml and associated scripts.