MYSQL_TAG=8
REDIS_TAG=7.0
MONGO_TAG=5
PGSQL_TAG=13
LDAP_TAG=2.4.50
INFLUXDB_TAG=2.5.0
TDENGINE_TAG=3.0.2.4
DYNAMO_TAG=1.21.0
CASSANDRA_TAG=3.11.6
TARGET=emqx/emqx