I have set up three containers that are networked because I would like to use Hadoop and Hive with PostgreSQL. You can access docker set up via https://github.com/jcool12/hadoop-docker/tree/main/hivepost The Hadoop container works, the PostgreSQL container works, but the Hive container, upon startup, presents this error:

Waiting for PostgreSQL to start…
/entrypoint.sh: line 4: pg_isready: command not found

The PostgreSQL container is running and looks fine, yet I’m still encountering this error: /entrypoint.sh: line 4: pg_isready: command not found.

I have installed the PostgreSQL client in the /hive/dockerfile and modified the entrypoint.sh, but nothing resolves the error. Could you please help me resolve this issue?