fix compile error "/usr/bin/ld: cannot find -lreadline"

[nickgal]

Adds libreadline-dev for pg_repack compile.

Here's the error I was getting before.

/usr/bin/ld: cannot find -lreadline
collect2: error: ld returned 1 exit status
make[1]: *** [/usr/lib/postgresql/13/lib/pgxs/src/makefiles/pgxs.mk:462: pg_repack] Error 1
make[1]: Leaving directory '/pg_repack-1.4.6/bin'
make: *** [Makefile:35: all] Error 2

[hartmut-co-uk]

Thanks for reporting & opening the PR, let me take a look and verify how this came about.

[hartmut-co-uk]

I've been able to build current master branch without any errors - could you please provide your OS, docker version and build logs?

I assume this was during make && make install of pg_repack?

[nickgal]

I assume this was during make && make install of pg_repack?

That is correct. It will fail during make and continue building the container "successfully".

I cloned fresh from github and still ran into the error.

Docker: 20.10.2
Operating System: Ubuntu 20.04.2 LTS
Kernel Version: 5.8.0-53-generic

env.txt
build.txt

Let me know if you would like any additional information.

[hartmut-co-uk]

got it, thanks, good catch!