This is quite strange, if I do: $ docker pull kamailio/pkg-kamailio-docker:4.4-jessie $ docker inspect kamailio/pkg-kamailio-docker:4.4-jessie | grep Id "Id": "sha256:6ee5a8451a2365cc497bbdf268335656143af81afceb9ee46f78bbafbcbbba37", # docker run -i -t --rm -v $(pwd):/code:rw kamailio/pkg-kamailio-docker:4.4-jessie /bin/bash and inside docker: root@d0a4b28bb583:/code# apt-cache policy libfreeradius-client-dev libfreeradius-client-dev: Installed: 1.1.6-7 Candidate: 1.1.6-7 Version table: *** 1.1.6-7 0 100 /var/lib/dpkg/status root@d0a4b28bb583:/code# FREERADIUS=1 make every-module group_include="kradius" Makefile:107: config.mak: No such file or directory target architecture <x86_64>, host architecture <x86_64> making config... CC (gcc) [M acc_radius.so] acc_radius_mod.o CC (gcc) [L libkcore.so.1.0] parse_privacy.o CC (gcc) [L libkcore.so.1.0] regexp.o CC (gcc) [L libkcore.so.1.0] parse_sst.o CC (gcc) [L libkcore.so.1.0] strcommon.o CC (gcc) [L libkcore.so.1.0] statistics.o CC (gcc) [L libkcore.so.1.0] kstats_wrapper.o CC (gcc) [L libkcore.so.1.0] cmpapi.o LD (gcc) [L libkcore.so.1.0] libkcore.so.1.0 LD (gcc) [M acc_radius.so] acc_radius.so CC (gcc) [M auth_radius.so] sterman.o CC (gcc) [M auth_radius.so] authrad_mod.o CC (gcc) [M auth_radius.so] authorize.o CC (gcc) [M auth_radius.so] extra.o make[2]: 'libkcore.so.1.0' is up to date. LD (gcc) [M auth_radius.so] auth_radius.so CC (gcc) [M misc_radius.so] functions.o CC (gcc) [M misc_radius.so] misc_radius.o CC (gcc) [M misc_radius.so] extra.o LD (gcc) [M misc_radius.so] misc_radius.so CC (gcc) [M peering.so] verify.o In file included from verify.c:37:0: ../../dprint.h:406:0: warning: "DEBUG" redefined # define DEBUG(fmt, args...) DBG(fmt , ## args) ^ In file included from ../../lib/kcore/radius.h:44:0, from verify.c:35: /usr/include/freeradius-client.h:23:0: note: this is the location of the previous definition #define DEBUG(args...) ; ^ CC (gcc) [M peering.so] peering.o make[2]: 'libkcore.so.1.0' is up to date. LD (gcc) [M peering.so] peering.so I don't see why it's failing on travis-ci if we are using the same docker image