See Makefile.
.env:
DEBUG=1
GOPROXY=http://goproxy.lan:8080
INPUT_KAFKA_TOPIC=events
KAFKA_CONSUMER_GROUP=events-consumer-group
KAFKA_SERVERS_STR=kafka:29092
KAFKA_CLIENT_ID=confluent-consumer
KAFKA_SECURITY_PROTOCOL=PLAINTEXT
KAFKA_SASL_MECHANISM=PLAIN
KAFKA_USER=events-consumer
KAFKA_PASSWORD=KAFKA_PASSWORD
KAFKA_CONSUMER_POLL_TIMEOUT=1
KAFKA_CONSUMER_BATCH_SIZE=500
CONSUME_MESSAGES_TOTAL=10_000_000
SHOW_EVERY_NTH_MESSAGE=10_000