I have an error while building the container

[Eyvind8]

ksmppd-1.0.2/smpp/libsmpp/smpp_uuid.c
ksmppd-1.0.2/smpp/libsmpp/smpp_uuid.h
svn: E170013: Unable to connect to a repository at URL 'https://svn.kannel.org/gateway/trunk'
svn: E230001: Server SSL certificate verification failed: issuer is not trusted
Fatal error occurred executing /usr/bin/svn checkout -r 5173 https://svn.kannel.org/gateway/trunk kannel-svn-trunk
rm -f smpp/libsmpp/*.o libsmpp.a smpp/ksmppd
gcc `./kannel-svn-trunk/gw-config --cflags` -I./kannel-svn-trunk -O1 -Wall -I. -I./smpp -I`pwd`/build/include -I/sw/include -fPIC     -c -o smpp/ksmppd.o smpp/ksmppd.c
/bin/sh: ./kannel-svn-trunk/gw-config: not found
smpp/ksmppd.c:70:25: fatal error: gwlib/gwlib.h: No such file or directory
 #include "gwlib/gwlib.h"
                         ^
compilation terminated.
make: *** [<builtin>: smpp/ksmppd.o] Error 1
The command '/bin/sh -c apk add --no-cache ca-certificates bash subversion   libxml2 pcre musl hiredis curl mariadb-client-libs   libxml2-dev pcre-dev build-base libtool musl-dev bison mariadb-dev   hiredis-dev   && curl -s -L https://github.com/kneodev/ksmppd/archive/1.0.2.tar.gz   -o /tmp/ksmppd.tar.gz   && tar xvzpf /tmp/ksmppd.tar.gz   && mkdir /ksmppd-1.0.2/kannel-svn-trunk   && ln -s /usr/share/libtool/build-aux/ltmain.sh   /ksmppd-1.0.2/kannel-svn-trunk/ltmain.sh   && ln -sf /usr/include/poll.h /usr/include/sys/poll.h   && ln -s /usr/include/unistd.h /usr/include/sys/unistd.h   && cd ksmppd-1.0.2 && ./bootstrap.sh && make   && cp smpp/ksmppd /usr/local/bin/   && apk del libxml2-dev pcre-dev build-base libtool musl-dev bison   hiredis-dev openssl-dev subversion mariadb-dev   && rm -rf /ksmppd-1.0.2 && rm -rf /tmp/*' returned a non-zero code: 2
ERROR: Service 'ksmppd' failed to build : Build failed

help with solution please