+ POSTGRES_USER: ${DB_USERNAME:-cps}
+ POSTGRES_PASSWORD: ${DB_PASSWORD:-cps}
+
+# zookeeper:
+# image: confluentinc/cp-zookeeper:6.1.1
+# environment:
+# ZOOKEEPER_CLIENT_PORT: 2181
+# ZOOKEEPER_TICK_TIME: 2000
+# ports:
+# - 22181:2181
+#
+# kafka:
+# image: confluentinc/cp-kafka:6.1.1
+# depends_on:
+# - zookeeper
+# ports:
+# - 29092:29092
+# environment:
+# KAFKA_BROKER_ID: 1
+# KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
+# KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092,PLAINTEXT_HOST://localhost:29092
+# KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
+# KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
+# KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1