PG_DUMPALL not executable within docker container

Steps to reproduce:

Startup Container:
```sh
synesc(at)dockerhost01:$ docker run --rm -it postgres:15.4 /bin/bash
```

Execute PG_DUMPALL, Params not required to see the issue.
```sh
root(at)13fba0e113c7:/# pg_dumpall
popen failure: Cannot allocate memory
pg_dumpall: error: program "pg_dump" is needed by pg_dumpall but was not
found in the same directory as "/usr/lib/postgresql/15/bin/pg_dumpall"
root(at)13fba0e113c7:/#
```

Was not able to fix the problem, with full parameter list.

--
Ing. Frießnegg Patrick
Synesc GmbH
mailto: patrick(dot)fri(at)gmail(dot)com