lvyanquan commented on code in PR #3605:
URL: https://github.com/apache/flink-cdc/pull/3605#discussion_r1904876171


##########
tools/cdcup/README.md:
##########
@@ -0,0 +1,30 @@
+# cdcup
+
+A `docker` (`compose`) environment on Linux / macOS is required to play with 
this. Ruby is **not** necessary.
+
+## `./cdcup.sh init`
+
+Initialize a playground environment, and generate configuration files.
+
+## `./cdcup.sh up`
+
+Start docker containers. Note that it may take a while before database is 
ready.
+
+## `./cdcup.sh pipeline <yaml>`
+
+Submit a YAML pipeline job. Before executing this, please ensure that:
+
+1. All container are running and ready for connections
+2. (For MySQL) You've created at least one database & tables to be captured
+
+## `./cdcup.sh flink`
+
+Print Flink Web dashboard URL.

Review Comment:
   What's more, could we provided a command to display the 
username/password/url of the MySQL source in docker compose, or provided a 
command to enter the pod of MySQL.
   
    



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